BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-50649High confidence

.NET Remote Code Execution Vulnerability

Microsoft · .NET 8.0

7.8HighCVSS 3.1
Recommended action
Within 7 days

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

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 4.02% 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 .NET 8.0 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: Within 30 daysRemediation target: Within 180 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.

Distribution package intelligence

Release-specific package status

Alpine findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · communitydotnet10-runtimeVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.10.0.10-r0Alpine Security Database ↗Source updated 11 Sep 2026
Alpine v3.23v3.23 · communitydotnet8-runtimeVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.8.0.29-r0Alpine Security Database ↗Source updated 11 Sep 2026
Alpine v3.23v3.23 · communitydotnet9-runtimeVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.9.0.18-r0Alpine Security Database ↗Source updated 11 Sep 2026
Alpine v3.22v3.22 · communitydotnet8-runtimeVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.8.0.29-r0Alpine Security Database ↗Source updated 11 Sep 2026
Alpine v3.22v3.22 · communitydotnet9-runtimeVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.9.0.18-r0Alpine Security Database ↗Source updated 11 Sep 2026
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-2026-50649 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitydotnet: .NET: Local code execution via deserialization of untrusted data
1,440 fixed

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

  • aspnetcore-runtime-8.0-0:8.0.30-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-8.0-0:8.0.30-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-8.0-0:8.0.30-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-8.0-0:8.0.30-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-9.0-0:9.0.19-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-9.0-0:9.0.19-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-9.0-0:9.0.19-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-9.0-0:9.0.19-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-dbg-8.0-0:8.0.30-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-dbg-8.0-0:8.0.30-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-dbg-8.0-0:8.0.30-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • aspnetcore-runtime-dbg-8.0-0:8.0.30-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
Summary
A flaw was found in .NET. This vulnerability allows an unauthorized attacker to execute code locally by exploiting a deserialization of untrusted data. This means that if an attacker can provide specially crafted data, the .NET application may process it in a way that leads to the execution of malicious code on the system where the application is running.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, 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-2026-44399

No EUVD known-exploited evidence

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code 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
7.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

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

Patch available
01

What, why and how

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

What

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Why

Attacker-influenced serialised data is reconstructed as trusted objects, which can invoke dangerous application behaviour.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

What

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Why

Attacker-influenced serialised data is reconstructed as trusted objects, which can invoke dangerous application behaviour.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

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 → Deserialization of Untrusted Data → execute code or commands in the affected security context
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-502 ↗

CWE-502: Deserialization of Untrusted Data. The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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:H/A:H/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.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
UnauthenticatedRemote code executionCWE-502
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-44399Official EUVD mapping

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2324Microsoft DeveloperTools: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Visual Studio Code, .NET Framework, Microsoft .NET, Visual Studio 2022 und Visual Studio 2026 ausnutzen, um erweiterte Berechtigungen, einschließlich Administratorrechte, zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen, einen Denial-of-Service-Zustand auszulösen oder Spoofing-Angriffe durchzuführen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0872Multiples vulnérabilités dans les produits Microsoft

CVE-2026-50510 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50520 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50522 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50524 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50525 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50526 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50527 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50528 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50646 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50648 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50649 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50650 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50651 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50657 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50658 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50659 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-50663 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-54108 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-54116 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-54117 du 14 juillet 2026 Bulletin de sécurité Microsoft CVE-2026-54118

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0869Multiples vulnérabilités dans Microsoft Windows

6-50518 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50524 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50525 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50526 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50527 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50528 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50646 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50647 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50648 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50649 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50650 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50651 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50655 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50659 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50661 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50666 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50667 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-50668 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-202

Official advisory ↗
CSIRT Italia · Italian · aggiornamenti-mensili-microsoft-22Aggiornamenti Mensili Microsoft

finestra - - CVE-2026-50668 : apre una nuova finestra - - CVE-2026-50667 : apre una nuova finestra - - CVE-2026-50666 : apre una nuova finestra - - CVE-2026-50665 : apre una nuova finestra - - CVE-2026-50663 : apre una nuova finestra - - CVE-2026-50661 : apre una nuova finestra Presente - CVE-2026-50659 : apre una nuova finestra - - CVE-2026-50658 : apre una nuova finestra - - CVE-2026-50657 : apre una nuova finestra - - CVE-2026-50655 : apre una nuova finestra - - CVE-2026-50653 : apre una nuova finestra - - CVE-2026-50652 : apre una nuova finestra - - CVE-2026-50651 : apre una nuova finestra - - CVE-2026-50650 : apre una nuova finestra - - CVE-2026-50649 : apre una nuova finestra - - CVE-2026-50648 : apre una nuova finestra - - CVE-2026-50647 : apre una nuova finestra - - CVE-2026-50646 : apre una nuova finestra - - CVE-2026-50528 : apre una nuova finestra - - CVE-2026-50527 : apre una nuova finestra - - CVE-2026-50526 : apre una nuova finestra - - CVE-2026-50525 : apre una nuova finestra - - CVE-2026-50524 : apre una nuova finestra - - CVE-2026-50522 : apre una nuova finestra - - CVE-2026-50520 : apre una nuova finestra - - CVE-2026-50518 : apre una nuova finestra - - CVE-2026-50510 : apre una nuova finestra - - CVE-2026-50509 : apre una nuova finestra - - CVE-2026-50506 : apre una nuova fi

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-025300マイクロソフトの.NET等の複数製品における信頼できないデータのデシリアライゼーションに関する脆弱性

.NETにおける信頼されていないデータのデシリアライズは、不正な攻撃者がローカルでコードを実行できる原因となります。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6882MS 7월 보안 위협에 따른 정기 보안 업데이트 권고

S(복원 파일 시스템) 권한 상승 취약성 | | Windows NTFS | CVE-2026-50667 | Windows 공용 로그 파일 시스템 드라이버 권한 상승 취약성 | | Windows Remote Access Connection Manager | CVE-2026-50666 | Windows 원격 액세스 권한 상승 취약성 | | Windows BitLocker | CVE-2026-50661 | Windows BitLocker 보안 기능 바이패스 취약성 | | .NET | CVE-2026-50659 | .NET 스푸핑 취약성 | | Microsoft Defender | CVE-2026-50658 | Mac 엔드포인트용 Microsoft Defender 권한 상승 취약성 | | Microsoft Defender | CVE-2026-50657 | Mac용 엔드포인트용 Microsoft Defender 정보 공개 취약성 | | Windows Media | CVE-2026-50655 | Windows 미디어 파운데이션 원격 코드 실행 취약성 | | .NET | CVE-2026-50651 | .NET 서비스 거부 취약성 | | .NET Framework | CVE-2026-50650 | .NET Framework 권한 상승 취약성 | | .NET | CVE-2026-50649 | .NET 원격 코드 실행 취약성 | | .NET Framework | CVE-2026-50648 | .NET Framework 서비스 거부 취약성 | | Active Directory Federation Services (AD FS) | CVE-2026-50647 | Active Directory 페더레이션 서버 서비스 거부 취약성 | | .NET Framework | CVE-2026-50646 | .NET Framework 원격 코드 실행 취약성 | | .NET | CVE-2026-50528 | .NET 보안 기능 우회 취약성 | | .NET Framework | CVE-2026-50527 | .NET Framework 서비스 거부 취약성 | | .NET | CVE-2026-50526 | .NET 변조 취약성 | | .NET | CVE-2026-50525 | .NET 서비스 거부 취약성 | | Windows DHCP Server | CVE-2026-50518 | Windows DHCP 서버 원격 코드 실행 취약성 | | Github Copilot | CVE-2026-50510 | GitHub Copilot 원격 코드 실행 취약성 | | Windows Wireless Wide Area Network Service | CVE-2026-5050

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0235Kwetsbaarheden verholpen in Microsoft Developer Tools

Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot schade uit de categorieën zoals genoemd in bijgevoegde tabel. Voor succesvol misbruik moet de kwaadwillende het slachtoffer misleiden een malafide bronbestand te openen en verwerken in de ontwikkelomgeving. ``` Visual Studio: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47305 | 7.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| GitHub Copilot and Visual Studio Code: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47282 | 6.50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Visual Studio Code: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-45496 | 5.50 | Omzeilen van beveiligingsmaatregel | | CVE-2026-50520 | 8.40 | Uitvoeren van willekeurige code | | CVE-2026-57101 | 7.10 | Omzeilen van beveiligingsmaatregel | | CVE-2026-57102 | 8.80 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| .NET Framework: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-50524 | 7.50 | Denial-of-Service | | CVE-2026-50527 | 7.50 | Denial-of-Service | | CVE-2026-50646 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-50648 | 7.50 | Denial-of-Service | | CVE-2026-50650 | 7.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| ASP.NET Core: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47300 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-47303 | 8.80 | Verkrijgen van verhoogde rechten | | CVE-2026-50506 | 7.50 | Denial-of-Service | | CVE-2026-56170 | 7.50 | Denial-of-Service | | CVE-2026-45646 | 7.50 | Denial-of-Service | |----------------|------|-------------------------------------| .NET: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47302 | 7.50 | Denial-of-Service | | CVE-2026-47304 | 8.10 | Omzeilen van beveiligingsmaatregel | | CVE-2026-50525 | 7.50 | Denial-of-Service | | CVE-2026-50526 | 7.00 | Manipulatie van gegevens | | CVE-2026-50528 | 8.20 | Omzeilen van beveiligingsmaatregel | | CVE-2026-50649 | 7.80 | Uitvoeren van willekeurige code | | CVE-2026-50651 | 7.50 | Denial-of-Service | | CVE-2026-50659 | 6.50 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| .NET Core: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-57108 | 7.50 | Denial-of-Service | |----------------|------|-------------------------------------| GitHub Copilot and Visual Studio: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-41109 | 8.80 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| ```

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
For details on how to apply this update, which includes the changes described in this advisory, 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 14 Jul 2026 · Last source change 25 Sept 2026, 18:23 UTC · CWE-502 · Deserialization of Untrusted Data

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-2026-44399
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: added remediation: msrc.microsoft.com/CVE-2026-50649; removed remediation: access.redhat.com/CVE-2026-50649.
    Before
    patch: msrc.microsoft.com/CVE-2026-50649 · remediation: access.redhat.com/CVE-2026-50649
    After
    patch: msrc.microsoft.com/CVE-2026-50649 · remediation: msrc.microsoft.com/CVE-2026-50649
    secure@microsoft.com ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    .NET 8.0: 8.0.0 < 8.0.29; .NET 9.0: 9.0.0 < 9.0.18; Microsoft .NET Framework 3.5: 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 < 4.7.4143.0; Microsoft .NET Framework 4.8: 4.8.0 < 4.8.4803.0; Microsoft .NET Framework 4.8.1: 4.8.0.0 < 4.8.9340.0; Microsoft Visual Studio 2026 version 18.7: 18.0 < 18.7.4 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
    After
    .NET 8.0: 8.0.0 < 8.0.29; .NET 9.0: 9.0.0 < 9.0.18; Microsoft .NET Framework 3.5: 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 < 4.7.4143.0; Microsoft .NET Framework 4.8: 4.8.0 < 4.8.4803.0; Microsoft .NET Framework 4.8.1: 4.8.0.0 < 4.8.9340.0; Microsoft Visual Studio 2026 version 18.7: 18.0 < 18.7.4 · 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 ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    8.0.0 < 8.0.29; 9.0.0 < 9.0.18; 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; 4.7.0 < 4.7.4143.0; 4.8.0 < 4.8.4803.0 · 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
    .NET 8.0: 8.0.0 < 8.0.29; .NET 9.0: 9.0.0 < 9.0.18; Microsoft .NET Framework 3.5: 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 < 4.7.4143.0; Microsoft .NET Framework 4.8: 4.8.0 < 4.8.4803.0; Microsoft .NET Framework 4.8.1: 4.8.0.0 < 4.8.9340.0; Microsoft Visual Studio 2026 version 18.7: 18.0 < 18.7.4 · 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 ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    .NET 8.0: 8.0.0 < 8.0.29; .NET 9.0: 9.0.0 < 9.0.18; Microsoft .NET Framework 3.5: 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 < 4.7.4143.0; Microsoft .NET Framework 4.8: 4.8.0 < 4.8.4803.0; Microsoft .NET Framework 4.8.1: 4.8.0.0 < 4.8.9340.0; Microsoft Visual Studio 2026 version 18.7: 18.0 < 18.7.4 · 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
    .NET 8.0: 8.0.0 < 8.0.29; .NET 9.0: 9.0.0 < 9.0.18; Microsoft .NET Framework 3.5: 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168; Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0; Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0; Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 < 4.7.4143.0; Microsoft .NET Framework 4.8: 4.8.0 < 4.8.4803.0; Microsoft .NET Framework 4.8.1: 4.8.0.0 < 4.8.9340.0; Microsoft Visual Studio 2026 version 18.7: 18.0 < 18.7.4 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-44399↗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-2026-50649 · cve.blacktree.nl