#VU107259 Integer overflow in Windows Server and Windows - CVE-2025-26639

Vulnerability identifier: #VU107259

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-2025-26639

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in Windows USB Print Driver. A local user can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system with elevated privileges.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows Server: 2012 R2 6.3.9600.21871 - 2012 R2 6.3.9600.22470, 2022 10.0.20348.202 - 2022 23H2 10.0.25398.1486, 2025 10.0.26100.1742 - 2025 10.0.26100.3476

Windows: 10 21H2 10.0.19041.3920 - 10 21H2 10.0.19044.5608, 10 22H2 10.0.19041.3920 - 10 22H2 10.0.19045.5608, 10 1607 10.0.14393.10 - 10 1607 10.0.14393.7876, 11 22H2 10.0.22449.1000 - 11 22H2 10.0.22621.5039, 11 23H2 10.0.22631.1825 - 11 23H2 10.0.22631.5039, 11 24H2 10.0.26052.1000 - 11 24H2 10.0.26100.3476

---

External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26639

---

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.