#VU105517 Incorrect Conversion between Numeric Types in Windows and Windows Server - CVE-2025-24059

Vulnerability identifier: #VU105517

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-24059

CWE-ID: CWE-681

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect conversion between numeric types in Windows Common Log File System Driver, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 21H2 10.0.19041.3920 - 10 21H2 10.0.19044.5487, 10 22H2 10.0.19041.3920 - 10 22H2 10.0.19045.5487, 10 1507 10.0.10240.1643 - 10 1507 10.0.10240.20915, 10 1607 10.0.14393.10 - 10 1607 10.0.14393.7785, 10 1809 10.0.17763.1 - 10 1809 10.0.17763.6893, 11 22H2 10.0.22449.1000 - 11 22H2 10.0.22621.4890, 11 23H2 10.0.22631.1825 - 11 23H2 10.0.22631.4890, 11 24H2 10.0.26052.1000 - 11 24H2 10.0.26100.3194

Windows Server: 2008 R2 SP1 - 2008 6.0.6003.23117, 2012 Gold - 2012 6.2.9200.25317, 2016 10.0.14393.10 - 2016 10.0.14393.7785, 2019 10.0.17763.1 - 2019 10.0.17763.6893, 2022 10.0.20348.202 - 2022 23H2 10.0.25398.1425, 2025 10.0.26100.1742 - 2025 10.0.26100.3194

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-24059

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.