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Full vulnerability report · 2026
CVE-2026-70306High confidence

Microsoft Office SharePoint Spoofing Vulnerability

Microsoft · Microsoft SharePoint Enterprise Server 2016

9.3CriticalCVSS 3.1
Recommended action
Within 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2026-56765

No EUVD known-exploited evidence

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

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
9.3 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

What

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path 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

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path 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
a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-79 ↗

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.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.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-79
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-56765Official EUVD mapping

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

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-1004Multiples vulnérabilités dans les produits Microsoft

ulletin de sécurité Microsoft CVE-2026-65811 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-65813 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-65815 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-66301 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-66805 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-66808 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-68821 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-69278 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-69306 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-69320 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70306 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70321 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70324 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70326 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70335 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70336 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70337 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70338 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70354 du 11 août 2026 Bulletin de sécurité Microsoft CVE-2026-70355 du 11 août 2026 Une gestion de version détaillée se trouve à la fin de ce document. Risques

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

nuova finestra - - CVE-2026-70322 : apre una nuova finestra - - CVE-2026-70321 : apre una nuova finestra - - CVE-2026-70320 : apre una nuova finestra - - CVE-2026-70319 : apre una nuova finestra - - CVE-2026-70318 : apre una nuova finestra - - CVE-2026-70317 : apre una nuova finestra - - CVE-2026-70316 : apre una nuova finestra - - CVE-2026-70315 : apre una nuova finestra - - CVE-2026-70314 : apre una nuova finestra - - CVE-2026-70313 : apre una nuova finestra - - CVE-2026-70312 : apre una nuova finestra - - CVE-2026-70311 : apre una nuova finestra - - CVE-2026-70310 : apre una nuova finestra - - CVE-2026-70307 : apre una nuova finestra - - CVE-2026-70306 : apre una nuova finestra - - CVE-2026-70304 : apre una nuova finestra - - CVE-2026-70130 : apre una nuova finestra - - CVE-2026-69320 : apre una nuova finestra - - CVE-2026-69306 : apre una nuova finestra - - CVE-2026-69278 : apre una nuova finestra - - CVE-2026-68823 : apre una nuova finestra - - CVE-2026-68821 : apre una nuova finestra - - CVE-2026-68820 : apre una nuova finestra - Presente CVE-2026-68819 : apre una nuova finestra - - CVE-2026-68817 : apre una nuova finestra - - CVE-2026-68816 : apre una nuova finestra - - CVE-2026-68815 : apre una nuova finestra - - CVE-2026-68814 : apre una nuova finestra - - CVE-2026-68813 : apre una n

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-028186マイクロソフトのMicrosoft SharePoint Serverにおけるクロスサイトスクリプティングの脆弱性

Microsoft Office SharePointにおけるウェブページ生成時の入力が不適切に無害化される（クロスサイトスクリプティング）ことで、不正な攻撃者がネットワーク上でなりすましを行うことが可能となります。

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

indows Ancillary Function Driver for WinSock | CVE-2026-68820 | WinSock용 Windows 보조 기능 드라이버 권한 상승 취약성 | | Windows Package Manager | CVE-2026-68821 | Windows 패키지 관리자 권한 상승 취약성 | | Azure Confidential Ledger | CVE-2026-68823 | Azure Confidential Ledger 원격 코드 실행 취약성 | | Visual Studio Code | CVE-2026-69278 | Visual Studio Code 보안 기능 바이패스 취약성 | | Visual Studio Code | CVE-2026-69306 | Visual Studio Code 보안 기능 바이패스 취약성 | | Visual Studio Code | CVE-2026-69320 | Visual Studio Code 원격 코드 실행 취약성 | | Microsoft Office | CVE-2026-70130 | Microsoft Office 원격 코드 실행 취약성 | | Windows DNS | CVE-2026-70304 | Windows DNS 권한 상승 취약성 | | Microsoft Office SharePoint | CVE-2026-70306 | Microsoft Office SharePoint 스푸핑 취약성 | | Windows Ancillary Function Driver for WinSock | CVE-2026-70307 | WinSock용 Windows 보조 기능 드라이버 권한 상승 취약성 | | Microsoft Office Word | CVE-2026-70310 | Microsoft Word 정보 유출 취약성 | | Microsoft Office Word | CVE-2026-70311 | Microsoft Office Word 원격 코드 실행 취약성 | | Microsoft Office PowerPoint | CVE-2026-70312 | Powerpoint 정보 공개 취약성 | | Microsoft Office PowerPoint | CVE-2026-70313 | Microsoft PowerPoint 원격 코드 실행 취약성 | | Microsoft Office | CVE-2026-70314 | Microsoft Office 정보 유출 취약성 | | Microsoft Office | CVE-2026-70315 | Microsoft Office 정보 유출 취약성 | | Microsoft Office PowerPoint | CVE-2026-70316 | Powerpoint 정

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
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 11 Aug 2026 · Last source change 29 Aug 2026, 16:24 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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-2026-56765
Product sourceCNA
Remediation sourceCVE/CNA references
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. Affected versionsThe structured affected or fixed version information changed.
    Before
    16.0.0 < 16.0.5565.1001; 16.0.0 < 16.0.10417.20198; 16.0.0 < 16.0.19725.20522 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    Microsoft SharePoint Enterprise Server 2016: 16.0.0 < 16.0.5565.1001; Microsoft SharePoint Server 2019: 16.0.0 < 16.0.10417.20198; Microsoft SharePoint Server Subscription Edition: 16.0.0 < 16.0.19725.20522 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    16.0.0 < 16.0.5561.1001; 16.0.0 < 16.0.10417.20175; 16.0.0 < 16.0.19725.20434 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    16.0.0 < 16.0.5565.1001; 16.0.0 < 16.0.10417.20198; 16.0.0 < 16.0.19725.20522 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-56765↗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-2026-70306 · cve.blacktree.nl