CVE-2026-62871: .NET Elevation of Privilege Vulnerability
.NET Elevation of Privilege Vulnerability
Other sources
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 18.8.3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 9.0.19Patch KB5122105 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.14.38 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.11Patch KB5122106 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 8.0.30Patch KB5122104
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62871?
The severity of CVE-2026-62871 is high with a score of 7.8.
How do I fix CVE-2026-62871?
To fix CVE-2026-62871, ensure you apply the latest updates and patches provided by Microsoft for the affected .NET versions.
What type of attack does CVE-2026-62871 allow?
CVE-2026-62871 allows an unauthorized attacker to execute code locally due to an out-of-bounds write.
Which software is affected by CVE-2026-62871?
CVE-2026-62871 affects multiple versions of Microsoft Visual Studio and .NET, including 2026, 2022, 10.0, 9.0, and 8.0 on various operating systems.
What is the potential impact of CVE-2026-62871?
The potential impact of CVE-2026-62871 includes elevated privileges allowing attackers to compromise the system's confidentiality, integrity, and availability.