CVE-2023-21695 Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability

High 7.5 Published Updated

A heap-based buffer overflow in Microsoft PEAP allows remote attackers to execute arbitrary code on affected Windows systems.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-21695?

CVE-2023-21695 is a high-severity memory corruption vulnerability in Microsoft Windows 10, published on 14 Feb 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2023-21695?

It affects 13 products.

Products include Microsoft Windows 10, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 20h2, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2 and 7 more.

How do I fix CVE-2023-21695?

No fix has been published for CVE-2023-21695 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-21695 being exploited?

There is no known exploitation of CVE-2023-21695 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-869x-6wgw-grqg.

Is CVE-2023-21695 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free