CVE-2026-107635

EUVD-2026-95022
Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/Aorimn/dislocker
https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105
https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180
https://github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581
https://www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-via-vmk-fvek-datum-size-underflow