CVE-2026-61936: CWE-862: Missing Authorization in Microsoft Windows 10 Version 1809
Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-61936) involves a missing authorization check in the Windows Defender Firewall Service on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit this flaw to bypass a security feature, potentially impacting system integrity. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low complexity, and requiring low privileges but no user interaction. Microsoft has released an official fix for this issue.
Potential Impact
An authorized local attacker can bypass a security feature in the Windows Defender Firewall Service, which may lead to integrity violations. There is no impact on confidentiality or availability. The vulnerability does not require user interaction and has not been reported to be exploited in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 (build 10.0.17763.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61936.
CVE-2026-61936: CWE-862: Missing Authorization in Microsoft Windows 10 Version 1809
Description
Missing authorization in Windows Defender Firewall Service allows an authorized attacker to bypass a security feature locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-61936) involves a missing authorization check in the Windows Defender Firewall Service on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit this flaw to bypass a security feature, potentially impacting system integrity. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low complexity, and requiring low privileges but no user interaction. Microsoft has released an official fix for this issue.
Potential Impact
An authorized local attacker can bypass a security feature in the Windows Defender Firewall Service, which may lead to integrity violations. There is no impact on confidentiality or availability. The vulnerability does not require user interaction and has not been reported to be exploited in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 (build 10.0.17763.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61936.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-13T04:47:32.464Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61936","vendor":"Microsoft"}]
Threat ID: 6a7b5808bf8831d5391559a7
Added to database: 08/11/2026, 17:12:40 UTC
Last enriched: 08/11/2026, 22:41:45 UTC
Last updated: 08/11/2026, 23:42:07 UTC
Views: 3
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