Microsoft Windows NTFS Out-Of-Bounds Read Vulnerability

MEDIUM 5.5EXPLOITED (CISA KEV)CVE-2025-24991 · Published 11/03/2025 · updated 17/06/2026

Microsoft Windows NTFS Out-Of-Bounds Read Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 11/03/2025. Patch affected systems as an emergency.

In short

CVE-2025-24991 is a MEDIUM (CVSS 5.5) vulnerability.
Exploited in the wild: CISA added it to the KEV catalog on 11/03/2025.
Chance of exploitation in the next 30 days (EPSS): 2.0%, higher than 80.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24991 · Vendor Advisory
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2025-24991

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