Inadequate Detection or Handling of Adversarial Input Perturbations in Automated Recognition Mechanism in Microsoft Windows and Windows Server - CVE-2025-26644

Vulnerability identifier: #VU107245

CSH Severity: Low

CVSS v4: 5.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-26644

CWE-ID: CWE-1039

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to perform spoofing attack.

The vulnerability exists due to automated recognition mechanism with inadequate detection or handling of adversarial input perturbations in Windows Hello. A local attacker can spoof page content.

Microsoft Windows
Windows Server

Install update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5737, 10 22H2 10.0.19045.5737, 10 1607 10.0.14393.7970, 10 1809 10.0.17763.7137, 11 22H2 10.0.22621.5191, 11 23H2 10.0.22631.5191, 11 24H2 10.0.26100.3775
Windows Server - addressed in versions 2012 R2 6.3.9600.22523, 2019 10.0.17763.7137, 2025 10.0.26100.3775

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26644

• Multiple vulnerabilities in Microsoft Windows Hello