BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-66806High confidence

Microsoft Office Word Information Disclosure Vulnerability

Microsoft · Microsoft 365 Apps for Enterprise

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.43% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Microsoft Microsoft 365 Apps for Enterprise and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-66806 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityconsole: console: TLS verification disabled when sending hub pull-secret to console.redhat.com
8 fixed

The vendor explicitly identifies these products or versions as containing the fix.

  • registry.redhat.io/rhacm2/console-rhel9@sha256:1f0c691b68fd10948199249a142dfcd7fb438d856a1a4f365d490c452be35e83_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/console-rhel9@sha256:446a14ecab55ac435bca583621066d92f8ac7c922585424b8d3a50a2e7ebb0e0_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/console-rhel9@sha256:8d485dda383d81506838aa7e6565bbd9fb743fe03552a507dfc9ec46459060d6_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/console-rhel9@sha256:a7540d4c501e1d1215ebff1f0b572f74e3b9a55bffb1ebfccb9546307d67116b_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64 as a component of multicluster engine for Kubernetes 2.6
  • registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64le as a component of multicluster engine for Kubernetes 2.6
  • registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390x as a component of multicluster engine for Kubernetes 2.6
  • registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64 as a component of multicluster engine for Kubernetes 2.6
Summary
A flaw was found in console. When the `HTTPS_PROXY` environment variable is not configured, the console component fails to verify Transport Layer Security (TLS) certificates for outbound connections. A network-positioned attacker (Man-in-the-Middle) can exploit this vulnerability to intercept the cluster pull-secret while it is being sent to console.redhat.com. This pull-secret is a critical credential that provides access to Red Hat container registries and cloud services, potentially leading to unauthorized access and sensitive information disclosure.
Remediation
Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-56748

No EUVD known-exploited evidence

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
5.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

What

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Out-of-bounds Read → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-125 ↗

CWE-125: Out-of-bounds Read. The product reads data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedCWE-125
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-56748Official EUVD mapping

Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2762Microsoft Office Produkte: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Office Produkte ausnutzen, um Dateien zu manipulieren, um seine Privilegien zu erhöhen, um Informationen offenzulegen, um einen Cross-Site Scripting Angriff durchzuführen, und um beliebigen Programmcode auszuführen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1000Multiples vulnérabilités dans Microsoft Office

de sécurité Microsoft Office CVE-2026-64915 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-64917 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-64919 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-64920 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-65656 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-65657 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-65661 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-65664 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-65807 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-66806 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-66807 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-66809 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-66810 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68792 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68793 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68794 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68795 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68796 du 11 août 2026 Bulletin de sécurité Microsoft Office CVE-2026-68797 du 11 août 2026 Bulletin de

Official advisory ↗
CSIRT Italia · Italian · aggiornamenti-mensili-microsoft-23Aggiornamenti Mensili Microsoft

nuova finestra - - CVE-2026-68801 : apre una nuova finestra - - CVE-2026-68800 : apre una nuova finestra - - CVE-2026-68799 : apre una nuova finestra - - CVE-2026-68798 : apre una nuova finestra - - CVE-2026-68797 : apre una nuova finestra - - CVE-2026-68796 : apre una nuova finestra - - CVE-2026-68795 : apre una nuova finestra - - CVE-2026-68794 : apre una nuova finestra - - CVE-2026-68793 : apre una nuova finestra - - CVE-2026-68792 : apre una nuova finestra - - CVE-2026-66810 : apre una nuova finestra - - CVE-2026-66809 : apre una nuova finestra - - CVE-2026-66808 : apre una nuova finestra - - CVE-2026-66807 : apre una nuova finestra - - CVE-2026-66806 : apre una nuova finestra - - CVE-2026-66805 : apre una nuova finestra - - CVE-2026-66804 : apre una nuova finestra - - CVE-2026-66802 : apre una nuova finestra - - CVE-2026-66799 : apre una nuova finestra - - CVE-2026-66301 : apre una nuova finestra - - CVE-2026-65815 : apre una nuova finestra - - CVE-2026-65814 : apre una nuova finestra - - CVE-2026-65813 : apre una nuova finestra - - CVE-2026-65811 : apre una nuova finestra - - CVE-2026-65810 : apre una nuova finestra - - CVE-2026-65807 : apre una nuova finestra - - CVE-2026-65806 : apre una nuova finestra - - CVE-2026-65799 : apre una nuova finestra - - CVE-2026-65798 : apre una nuova fi

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-028543マイクロソフトのMicrosoft 365 Apps等の複数製品における複数の脆弱性

Microsoft Office Wordのオフバイワンエラーにより、不正な攻撃者がローカル環境で情報を漏洩させる可能性があります。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6916MS 8월 보안 위협에 따른 정기 보안 업데이트 권고

s 저장소 포트 드라이버 권한 상승 취약성 | | Microsoft Dynamics 365 (on-premises) | CVE-2026-65815 | Microsoft Dynamics 365 온-프레미스 원격 코드 실행 취약성 | | Microsoft Dynamics 365 (on-premises) | CVE-2026-66301 | Microsoft Dynamics 365(온-프레미스) 정보 공개 취약성 | | Windows Key Guard | CVE-2026-66799 | Windows Key Guard 권한 상승 취약성 | | Microsoft Azure Attestation service and Device Health Attestation Service | CVE-2026-66802 | Windows 장치 상태 증명(DHA) 원격 코드 실행 취약성 | | Windows Cross Device Service | CVE-2026-66804 | Microsoft Windows Cross Device Service 권한 상승 취약성 | | Microsoft Office SharePoint | CVE-2026-66805 | Microsoft SharePoint Server 원격 코드 실행 취약성 | | Microsoft Office Word | CVE-2026-66806 | Microsoft Office Word 정보 공개 취약성 | | Microsoft Office | CVE-2026-66807 | Microsoft Office 그래픽 구성 요소 원격 코드 실행 취약성 | | Microsoft Office SharePoint | CVE-2026-66808 | Microsoft SharePoint Server 원격 코드 실행 취약성 | | Microsoft Office | CVE-2026-66809 | Microsoft Office 그래픽 구성 요소 정보 유출 취약성 | | Microsoft Office Word | CVE-2026-66810 | Microsoft Office Word 정보 공개 취약성 | | Microsoft Office | CVE-2026-68792 | Microsoft Office 권한 상승 취약성 | | Microsoft Office Excel | CVE-2026-68793 | Microsoft Excel 원격 코드 실행 취약성 | | Microsoft Office Excel | CVE-2026-68794 | Microsoft Excel 원격 코드 실행 취약성 | | Microsoft Office Excel | CVE-2026-68795 | Microsoft Excel 원격 코드 실행 취

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0286Kwetsbaarheden verholpen in Microsoft Office

Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade zoals beschreven in onderstaande tabel. Voor succesvol misbruik moet de kwaadwillende het slachtoffer misleiden een malafide bestand te openen of link te volgen. In onderstaande tabel wordt de kwetsbaarheid met kenmerk **CVE-2026-65667** genoemd met een CVSS score van 10.0. Ook worden de kwetsbaarheden met kenmerk **CVE-2026-50515, CVE-2026-62896** en **CVE-2026-70332** genoemd, elk met een CVSS score van 9 en hoger. Deze kwetsbaarheden zijn echter reeds centraal verholpen door microsoft en slechts opgenomen ter informatie. Hiervoor zijn geen acties vereist. De kwetsbaarheid met kenmerk **CVE-2026-70306** heeft ook een CVSS score hoger dan 9 en vereist **wel** actie. Deze kwetsbaarheid bevindt zich in Sharepoint en stelt een kwaadwillende in staat om middels een Cross-site-scripting-aanval willekeurige code uit te voeren in de context van het slachtoffer. **UPDATE**: Onderzoekers melden actief misbruik te hebben waargenomen van de kwetsbaarheid met kenmerk CVE-2026-63520. Deze bevindt zich in SharePoint en stelt een kwaadwillende in staat om willekeurige code uit te voeren op het kwetsbare systeem. Met name Sharepoint installaties die publiek toegankelijk zijn lopen hierdoor hoog risico op actief misbruik. ``` Microsoft OneDrive: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-65680 | 6.70 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Azure SQL Managed Instance: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-62836 | 8.70 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Teams for Android: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-65768 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-65767 | 8.80 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Microsoft Teams: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-62896 | 9.60 | Verkrijgen van verhoogde rechten | | CVE-2026-62918 | 7.50 | Voordoen als andere gebruiker | | CVE-2026-65667 | 10.0 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Office Word: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-63518 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63521 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70311 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-70310 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70319 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-58651 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63525 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63528 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63527 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63530 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63531 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-64905 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64907 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64915 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64917 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-66806 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-66810 | 5.50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Microsoft Office: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-63513 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63515 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63517 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63519 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-65657 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-65656 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-65661 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-65664 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68792 | 7.80 | Verkrijgen van verhoogde rechten | | CVE-2026-70315 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70314 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70317 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70323 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-62842 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63524 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63526 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63529 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-63532 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-63533 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64898 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64899 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-64903 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64904 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64909 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64910 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64911 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-66807 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-66809 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70130 | 8.40 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Microsoft Office PowerPoint: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-68809 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70312 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70313 | 7.80 | Toegang tot gevoelige gegevens | | CVE-2026-70316 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70325 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70320 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70322 | 5.50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Microsoft Office Excel: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-65807 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-68793 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68794 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68795 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68796 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68800 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68802 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-68807 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68806 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68808 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-68810 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68811 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68813 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-68815 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68816 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-70318 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-70327 | 6.50 | Toegang tot gevoelige gegevens | | CVE-2026-70328 | 6.50 | Toegang tot gevoelige gegevens | | CVE-2026-68797 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-68798 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68799 | 5.50 | Toegang tot gevoelige gegevens | | CVE-2026-68801 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68803 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68804 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68805 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68812 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68814 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-68817 | 7.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Microsoft Office Outlook: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-70329 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-62882 | 4.30 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Azure Service Bus: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-50515 | 9.90 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Microsoft Office Access: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-64906 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64912 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64908 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64914 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64920 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-64919 | 7.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Microsoft Teams Mobile: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-65769 | 6.50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Microsoft Office SharePoint: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-57105 | 8.00 | Voordoen als andere gebruiker | | CVE-2026-62829 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-62827 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-62837 | 6.50 | Toegang tot gevoelige gegevens | | CVE-2026-63514 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-63512 | 6.50 | Manipulatie van gegevens | | CVE-2026-63516 | 6.50 | Voordoen als andere gebruiker | | CVE-2026-63520 | 8.10 | Uitvoeren van willekeurige code | | CVE-2026-64922 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-65658 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-65663 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-65660 | 6.50 | Voordoen als andere gebruiker | | CVE-2026-65665 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-70321 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-70324 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-70355 | 7.30 | Verkrijgen van verhoogde rechten | | CVE-2026-64897 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-64900 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-64902 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-64901 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-64916 | 4.60 | Voordoen als andere gebruiker | | CVE-2026-64921 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-66805 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-66808 | 8.80 | Uitvoeren van willekeurige code | | CVE-2026-70306 | 9.30 | Voordoen als andere gebruiker | | CVE-2026-70326 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-70332 | 9.60 | Voordoen als andere gebruiker | | CVE-2026-58639 | 6.50 | Voordoen als andere gebruiker | | CVE-2026-62839 | 6.50 | Voordoen als andere gebruiker | | CVE-2026-62917 | 4.60 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| ```

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 Aug 2026 · Last source change 29 Sept 2026, 20:22 UTC · CWE-125 · Out-of-bounds Read

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-56748
Product sourceCNA
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceOther authority
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/CVE-2026-66806.
    Before
    remediation: access.redhat.com/CVE-2026-66806 · vendor advisory: msrc.microsoft.com/CVE-2026-66806
    After
    vendor advisory: msrc.microsoft.com/CVE-2026-66806
    secure@microsoft.com ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    After
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  3. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    secure@microsoft.com ↗
  4. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/CVE-2026-66806.
    Before
    remediation: access.redhat.com/CVE-2026-66806 · vendor advisory: msrc.microsoft.com/CVE-2026-66806
    After
    vendor advisory: msrc.microsoft.com/CVE-2026-66806
    secure@microsoft.com ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    After
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  6. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    secure@microsoft.com ↗
  7. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/CVE-2026-66806.
    Before
    remediation: access.redhat.com/CVE-2026-66806 · vendor advisory: msrc.microsoft.com/CVE-2026-66806
    After
    vendor advisory: msrc.microsoft.com/CVE-2026-66806
    secure@microsoft.com ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    After
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  9. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    secure@microsoft.com ↗
  10. Affected versionsThe structured affected or fixed version information changed.
    Before
    16.0.1 < https://aka.ms/OfficeSecurityReleases; 19.0.0 < https://aka.ms/OfficeSecurityReleases; 16.0.0 < https://aka.ms/OfficeSecurityReleases; 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  11. Affected versionsThe structured affected or fixed version information changed.
    Before
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2024: 16.0.0 < https://aka.ms/OfficeSecurityReleases; Microsoft Word 2016: 16.0.1 < 16.0.5565.1000 · Fixed: Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    Red Hat Product Security ↗
  12. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  13. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-66806 to remediation: access.redhat.com/CVE-2026-66806.
    Before
    remediation: access.redhat.com/CVE-2026-66806
    After
    remediation: access.redhat.com/CVE-2026-66806
    Red Hat Product Security ↗
  14. Affected versionsThe structured affected or fixed version information changed.
    Before
    rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · Fixed: registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64 as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64le as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390x as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64 as a component of multicluster engine for Kubernetes 2.6
    After
    Fixed: registry.redhat.io/rhacm2/console-rhel9@sha256:1f0c691b68fd10948199249a142dfcd7fb438d856a1a4f365d490c452be35e83_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/console-rhel9@sha256:446a14ecab55ac435bca583621066d92f8ac7c922585424b8d3a50a2e7ebb0e0_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/console-rhel9@sha256:8d485dda383d81506838aa7e6565bbd9fb743fe03552a507dfc9ec46459060d6_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/console-rhel9@sha256:a7540d4c501e1d1215ebff1f0b572f74e3b9a55bffb1ebfccb9546307d67116b_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64 as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64le as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390x as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64 as a component of multicluster engine for Kubernetes 2.6
    Red Hat Product Security ↗
  15. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-66806 to remediation: access.redhat.com/CVE-2026-66806.
    Before
    remediation: access.redhat.com/CVE-2026-66806
    After
    remediation: access.redhat.com/CVE-2026-66806
    Red Hat Product Security ↗
  16. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  17. Affected versionsThe structured affected or fixed version information changed.
    Before
    multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes; rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
    After
    rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · Fixed: registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64 as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64le as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390x as a component of multicluster engine for Kubernetes 2.6; registry.redhat.io/multicluster-engine/console-mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64 as a component of multicluster engine for Kubernetes 2.6
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-56748↗Red Hat Product Security security advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-66806 · cve.blacktree.nl