Is CVE-2026-120453 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-120453?

CVE-2026-120453 has a CVSS v3 severity of LOW (3.3).

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CVE-2026-120453

Description

The Sleuth Kit through 4.15.0 contains a heap out-of-bounds read vulnerability in hfs_load_extended_attrs() in tsk/fs/hfs.c that reads the decmpfs header without checking attribute length. Attackers can supply a crafted HFS+ image with a com.apple.decmpfs attr_size of 1 to 15 to read past the allocation and crash analysis tools like istat or icat.