SB2025040903 - Multiple vulnerabilities in Microsoft Windows Hello

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Authentication (CVE-ID: CVE-2025-26635)

The vulnerability allows a remote user to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests in Windows Hello. A remote administrator can bypass the Windows Hello security feature.

2) Inadequate Detection or Handling of Adversarial Input Perturbations in Automated Recognition Mechanism (CVE-ID: CVE-2025-26644)

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.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26635
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26644