CVE-2026-27913: CWE-20: Improper Input Validation in Microsoft Windows Server 2012
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-27913) affects Windows Server 2012 (version 6.2.9200.0) and is caused by improper input validation in the BitLocker component. It enables an unauthorized local attacker to bypass BitLocker security protections, potentially compromising data confidentiality and integrity. The vulnerability does not require privileges or user interaction to exploit. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to bypassing BitLocker security features, resulting in high confidentiality and integrity impacts on the affected system. There is no impact on availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Administrators should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913 to protect affected systems. No additional mitigation actions are indicated by the vendor advisory.
CVE-2026-27913: CWE-20: Improper Input Validation in Microsoft Windows Server 2012
Description
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
CVSS v3.1
Score 7.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-27913) affects Windows Server 2012 (version 6.2.9200.0) and is caused by improper input validation in the BitLocker component. It enables an unauthorized local attacker to bypass BitLocker security protections, potentially compromising data confidentiality and integrity. The vulnerability does not require privileges or user interaction to exploit. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to bypassing BitLocker security features, resulting in high confidentiality and integrity impacts on the affected system. There is no impact on availability. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Administrators should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913 to protect affected systems. No additional mitigation actions are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.686Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913","vendor":"Microsoft"}]
Threat ID: 69de7a2182d89c981fd6a7c7
Added to database: 4/14/2026, 5:32:17 PM
Last enriched: 5/19/2026, 10:37:45 AM
Last updated: 5/30/2026, 3:24:01 AM
Views: 80
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