PatchTheCVECVE-2026-83634: Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.
CVE-2026-83634 is a high-severity flaw (CVSS 7.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.
Why this priority
- High severity
- On your watchlist
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 70%) |
| CISA exploited list | No |
| Weakness | CWE-415 |
| Published | 2026-10-13 |
| Last modified | 2026-10-13 |
Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
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-2026-83634?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-83634 being exploited?
CVE-2026-83634 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-2026-83634 affect?
CVE-2026-83634 affects affected software. Severity is high (CVSS 7.8). Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.
How urgent is CVE-2026-83634?
Priority 40/100. High severity; On your watchlist
Software pages
Windows vulnerabilities · BitLocker vulnerabilities