CVE-2026-107635
CVE-2026-107635
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581 (patch)
- github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c (technical-description)
- github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c (technical-description)
- github.com/Aorimn/dislocker (product)
- www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-107635?
- CVE-2026-107635 is a medium-severity vulnerability, classified under Integer Underflow. CVSS score: 5.5/10. Published 2026-10-08.
- How severe is CVE-2026-107635?
- Medium severity. CVSS v3 base score is 5.5 out of 10.