CVE-2026-108463 Windows SmartScreen Security Feature Bypass Vulnerability
An attacker can bypass Windows SmartScreen security features via improper path resolution, potentially allowing malicious code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-108463?
CVE-2026-108463 is a high-severity vulnerability in Microsoft Windows 11 24h2, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
Weakness: CWE-41
Which versions are affected by CVE-2026-108463?
It affects 4 products.
Products include Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows 11 26h2.
How do I fix CVE-2026-108463?
No fix has been published for CVE-2026-108463 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-108463 being exploited?
There is no known exploitation of CVE-2026-108463 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 24h2
- CVE-2025-60710 Microsoft Windows Link Following
- CVE-2026-54990 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2025-50165 Windows Graphics Component Remote Code Execution Vulnerability
- CVE-2025-21311 Windows NTLM V1 Elevation of Privilege Vulnerability
- CVE-2026-83523 Windows Image Acquisition Remote Code Execution Vulnerability
Sources
Also known as GHSA-jgff-h7c7-5mrc.