CVE-2026-116729
libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x001a
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x001a() caused by an unbounded strlen on embedded XML plist data. Attackers can supply a crafted FileVault 2 volume with non-NUL-terminated plist data, causing libfvde_volume_open() to read past the heap block buffer.
| CWE | CWE-125 |
| Vendor | libyal |
| Product | libfvde |
| Published | Oct 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
libyal / libfvde
0 ≤ 20260923
References
github.com: https://github.com/libyal/libfvde/issues/70 github.com: https://github.com/libyal/libfvde github.com: https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f github.com: https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c#L2786-L2792 hackmd.io: https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read vulncheck.com: https://www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds-read-via-libfvde-encrypted-metadata-read-type-0x001a
Credits
HaiND from the Post and Telecommunication Institute of Technology