CVE-2025-21180 Windows exFAT File System Remote Code Execution Vulnerability

High 7.8 Published Updated

Heap-based buffer overflow in Windows exFAT allows local attackers to execute arbitrary code.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-21180?

CVE-2025-21180 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1507, published on 11 Mar 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Heap-based buffer overflow in Windows exFAT File System allows an unauthorized attacker to execute code locally.

Weakness: CWE-122

Which versions are affected by CVE-2025-21180?

It affects 15 products.

Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2 and 9 more.

How do I fix CVE-2025-21180?

No fix has been published for CVE-2025-21180 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-2025-21180 being exploited?

There is no known exploitation of CVE-2025-21180 in the wild and no public exploit code.

All Microsoft Windows 10 1507 vulnerabilities

Sources

Also known as GHSA-fhp9-73g9-7fgj.

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