Vulnerability · Published Apr 14, 2026 · Assigned by microsoft
CVE-2026-27913Windows BitLocker Security Feature Bypass Vulnerability
High 7.7
In plain English
A high-severity improper input validation in Windows Server 2012 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.3%top 76.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server 2012 | 6.2.9200.0 – before 6.2.9200.26026 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – before 6.2.9200.26026 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – before 6.3.9600.23132 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – before 6.3.9600.23132 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.9060 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – before 10.0.14393.9060 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.8644 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.8644 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.5020 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.2274 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Windows BitLocker Security Feature Bypass Vulnerability vendor-advisory, patch