PatchTheCVECVE-2026-27913: Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature lo
CVE-2026-27913 is a high-severity flaw (CVSS 7.7) affecting windows server 2012, windows server 2016, windows server 2019. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.7 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 77%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2026-04-14 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-27913?
windows server 2012: mitigate or apply the listed mitigation; windows server 2016: upgrade to 10.0.14393.9060; windows server 2019: upgrade to 10.0.17763.8644. Exact commands for each OS are on this page.
Is CVE-2026-27913 being exploited?
CVE-2026-27913 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-27913 affect?
CVE-2026-27913 affects windows server 2012, windows server 2016, windows server 2019. Severity is high (CVSS 7.7). Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
How urgent is CVE-2026-27913?
Priority 38/100. High severity; On your watchlist
Software pages
Windows vulnerabilities · Windows Server vulnerabilities · BitLocker vulnerabilities
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