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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

16 Oct 2026, 12:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~5.5~~	v2 : unknown v3 : 6.1

08 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 15:17

Updated : 2026-10-16 12:16

NVD link : CVE-2026-107635

Mitre link : CVE-2026-107635

CVE.ORG link : CVE-2026-107635

JSON object : View

Products Affected

No product.

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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