CVEs / CVE-2025-24991

CVE-2025-24991: Microsoft Windows NTFS Out-Of-Bounds Read Vulnerability

Known exploited in the CISA KEV catalog since 11 Mar 2025
medium 5.5 CVSS 3.1 (from the CNA)
EPSS 2.01% chance of exploitation in the next 30 days, higher than 80% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Microsoft Windows New Technology File System (NTFS) contains an out-of-bounds read vulnerability that allows an authorized attacker to disclose information locally.
CISA, Known Exploited Vulnerabilities catalog

Description

Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.
The CVE record, via NVD · published 11 Mar 2025 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Microsoft Windows 10 Version 1507	from 10.0.10240.0, before 10.0.10240.20947	10.0.10240.20947
Microsoft Windows 10 Version 1607	from 10.0.14393.0, before 10.0.14393.7876	10.0.14393.7876
Microsoft Windows 10 Version 1809	from 10.0.17763.0, before 10.0.17763.7009	10.0.17763.7009
Microsoft Windows 10 Version 21H2	from 10.0.19044.0, before 10.0.19044.5608	10.0.19044.5608
Microsoft Windows 10 Version 22H2	from 10.0.19045.0, before 10.0.19045.5608	10.0.19045.5608
Microsoft Windows 11 version 22H2	from 10.0.22621.0, before 10.0.22621.5039	10.0.22621.5039
Microsoft Windows 11 version 22H3	from 10.0.22631.0, before 10.0.22631.5039	10.0.22631.5039
Microsoft Windows 11 Version 23H2	from 10.0.22631.0, before 10.0.22631.5039	10.0.22631.5039
Microsoft Windows 11 Version 24H2	from 10.0.26100.0, before 10.0.26100.3476	10.0.26100.3476
Microsoft Windows Server 2008 R2 Service Pack 1	from 6.1.7601.0, before 6.1.7601.27618	6.1.7601.27618
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)	from 6.1.7601.0, before 6.1.7601.27618	6.1.7601.27618
Microsoft Windows Server 2008 Service Pack 2	from 6.0.6003.0, before 6.0.6003.23168	6.0.6003.23168
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)	from 6.0.6003.0, before 6.0.6003.23168	6.0.6003.23168
Microsoft Windows Server 2012	from 6.2.9200.0, before 6.2.9200.25368	6.2.9200.25368
Microsoft Windows Server 2012 (Server Core installation)	from 6.2.9200.0, before 6.2.9200.25368	6.2.9200.25368
Microsoft Windows Server 2012 R2	from 6.3.9600.0, before 6.3.9600.22470	6.3.9600.22470
Microsoft Windows Server 2012 R2 (Server Core installation)	from 6.3.9600.0, before 6.3.9600.22470	6.3.9600.22470
Microsoft Windows Server 2016	from 10.0.14393.0, before 10.0.14393.7876	10.0.14393.7876
Microsoft Windows Server 2016 (Server Core installation)	from 10.0.14393.0, before 10.0.14393.7876	10.0.14393.7876
Microsoft Windows Server 2019	from 10.0.17763.0, before 10.0.17763.7009	10.0.17763.7009
Microsoft Windows Server 2019 (Server Core installation)	from 10.0.17763.0, before 10.0.17763.7009	10.0.17763.7009
Microsoft Windows Server 2022	from 10.0.20348.0, before 10.0.20348.3328	10.0.20348.3328
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)	from 10.0.25398.0, before 10.0.25398.1486	10.0.25398.1486
Microsoft Windows Server 2025	from 10.0.26100.0, before 10.0.26100.3476	10.0.26100.3476
Microsoft Windows Server 2025 (Server Core installation)	from 10.0.26100.0, before 10.0.26100.3476	10.0.26100.3476

Exploitation

In CISA KEV since	11 Mar 2025
Due date for US federal agencies	1 Apr 2025
Used in ransomware campaigns	Unknown
Required action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity

CVSS 3.1	5.5 medium `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N` Scored by the CNA ([email protected])
Weakness	CWE-125

References

CVE-2025-24991 on NVD
CVE-2025-24991 in the CISA KEV catalog
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-24991 (cited by CISA)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24991 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24991 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.