CVE-2026-83634
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk29th percentile - higher than 29% of all known CVEs
Summary
Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.
Risk Assessment
This flaw could let a local attacker escalate privileges and potentially execute code, undermining disk encryption security.
Recommendation
Immediately apply Microsoft patches for Windows BitLocker and verify the integrity of disk encryption configurations.
Other vulnerabilities in Windows BitLocker
See all- CVE-2026-96909Critical
A heap-based buffer overflow in Windows BitLocker allows an unauthorized attacker to execute code over a network. The vulnerability stems from improper memory handling during data processing.
- CVE-2026-50507Medium
Missing authentication for a critical function in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
- CVE-2026-88070High
Out-of-bounds read in Windows BitLocker allows an authorized attacker to elevate privileges locally.
- CVE-2026-85920High
Time-of-check time-of-use (TOCTOU) race condition in Windows BitLocker allows an authorized attacker to elevate privileges locally.
- CVE-2026-83500Medium
URL redirection to untrusted site ('open redirect') in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
- CVE-2026-69458High
Out-of-bounds read in Windows BitLocker allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69449Medium
A heap-based buffer overflow in Windows BitLocker allows an authorized attacker to execute code locally.
- CVE-2026-50661Medium
A protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
- CVE-2026-45658High
Improper access control in Windows BitLocker allows an authorized attacker to bypass a security feature locally.
- CVE-2026-45655Medium
Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.
Original NVD description (English source)
Double free in Windows BitLocker allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS