Vulnerability Description
libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/libyal/libfvde
- https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metada
- https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8
- https://github.com/libyal/libfvde/issues/70
- https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read
- https://www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds
FAQ
What is CVE-2026-116728?
CVE-2026-116728 is a vulnerability with a CVSS score of 5.5 (MEDIUM). libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block....
How severe is CVE-2026-116728?
CVE-2026-116728 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116728?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.