CVE-2026-108463

Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

Score

CVSS 3.1 8.8 High

Status

Analyzed - secure@microsoft.com

Published

2026-10-13

Last modified

2026-10-28

Weaknesses

CWE-41

Affected products

• Windows 11 24H2 (Microsoft)
• Windows 11 24h2 (Microsoft)
• Windows 11 25H2 (Microsoft)
• Windows 11 25h2 (Microsoft)
• Windows 11 26H1 (Microsoft)
• Windows 11 26h1 (Microsoft)
• Windows 11 26h2 (Microsoft)
• Windows 11 Version 26h2 For Arm64-based Systems (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108463