CVE-2026-108463
published 2026-10-13CVE-2026-108463: Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
PriorityP355high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.88%
58.7th percentile
Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.9711 | 10.0.26100.9711 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.9711 | 10.0.26200.9711 |
| microsoft | windows_11_version_26h1 | >= 10.0.28000.0 < 10.0.28000.3231 | 10.0.28000.3231 |
| microsoft | windows_11_version_26h2 | >= 10.0.26300.0 < 10.0.26300.9711 | 10.0.26300.9711 |
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VulDB
Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2 SmartScreen improper authorization (EUVD-2026-100457)
vuldb·2026-10-23
CVE-2026-108463 Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2 SmartScreen improper authorization (EUVD-2026-100457)
A vulnerability, which was classified as very critical, was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2. The affected element is an unknown function of the component SmartScreen. The manipulation results in improper authorization.
This vulnerability is reported as CVE-2026-108463. The attack can be launched remotely. No exploit exists.
It is best practice to apply a patch to resolve this issue.
GHSA
Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
ghsa_unreviewed·2026-10-13
CVE-2026-108463 [HIGH] CWE-41 Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
No detection rules found.
No public exploits indexed.
Sans Isc
October 2026 Microsoft Patch Tuesday, (Tue, Oct 13th)
blogs_sans_isc·2026-10-13·CVSS 8.8
CVE-2026-96951 [HIGH] October 2026 Microsoft Patch Tuesday, (Tue, Oct 13th)
October 2026 Microsoft Patch Tuesday
Published: 2026-10-13. Last Updated: 2026-10-13 19:25:52 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Microsoft today released patches for 1,417 vulnerabilities. 76 of these vulnerabilities are rated critical, with 7 critical vulnerabiilties requiring no customer actions. One vulnerability was disclosed before today's patch Tuesday, and one is already exploited.
CVE-2026-96951: An already exploited Windows Shell Security Feature Bypass Vulnerability. This vulnerabliity allows bypassing the "Mark of the Web" making it easier to exeucte code by sending a malicious message to a user via e-mail or instant messaging. The victim will still have to open the file.
CVE-2026-108398: This vulnerability, a .NET framework security feature bypass, could be
Rapid7
Patch Tuesday - October 2026
blogs_rapid7·2026-10-13·CVSS 8.8
CVE-2026-96951 [HIGH] Patch Tuesday - October 2026
Microsoft is publishing 1,413 own-product vulnerabilities on October 2026 Patch Tuesday , including 1,102 vulnerabilities in Windows. Anyone who enjoyed last month’s record-setting Patch Tuesday will love the October 2026 edition, because it’s much bigger still. As Rapid7 has noted over the course of 2026, there is every reason to suppose that vulnerability volumes will continue to rise. Microsoft is aware of exploitation in the wild for just one of the vulnerabilities published today, as well as public disclosure for two others.
## Windows Shell: zero-day security feature bypass
The Windows Shell is Microsoft’s term for the GUI interaction logic for the entire OS provided by explorer.exe and associated libraries and APIs, and for the second time this year , the Windows Shell is the site
2026-10-13
Published