CVE-2026-116729
libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x001a
- State
- Published
- Severity
- 4.8 Medium
- Published
- Oct 26, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 26, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
libfvdelibyal |
|
References
- GitHub Issue #70issue-tracking
- https://github.com/libyal/libfvdeproduct
- https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8fpatch
- https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c#L2786-L2792technical-description
- https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-readthird-party-advisory
- VulnCheck Advisory: libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x001athird-party-advisory
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