Out-of-bounds Read in The Sleuth Kit
CVE-2026-120453
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/sleuthkit/sleuthkit/issues/3583 (issue-tracking)
- github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/hfs.c (technical-description)
- github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0 (release-notes)
- hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read (technical-description)
- www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-heap-out-of-bounds-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120453?
- CVE-2026-120453 is a low-severity vulnerability in The Sleuth Kit, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2026-11-02.
- How severe is CVE-2026-120453?
- Low severity. CVSS v3 base score is 3.3 out of 10.