CVE-2026-116729

Low

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.

SeverityLow

CVSS3.3

Exploit probability—

ProductLibyal Libfvde

PublishedOct 26, 2026

First seenOct 26, 2026

Weakness typeCWE-125Out-of-bounds read

How to fix

Patches

github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f

Affected products

Product	Affected versions	Fixed in
libyal libfvde	v ≤ 20260923	—

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