Vulnerability · Published Nov 2, 2026 · Assigned by VulnCheck
CVE-2026-120453The Sleuth Kit through 4.15.0 Heap Out-of-Bounds Read via HFS+ decmpfs Header
Low 3.3
In plain English
A low-severity out-of-bounds read in The Sleuth Kit from The Sleuth Kit. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 86.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-120453 |
| Ubuntu:24.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-120453 |
| Ubuntu:26.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-120453 |
| Ubuntu:26.10 | sleuthkit | no fix listed | UBUNTU-CVE-2026-120453 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Sleuth Kit | The Sleuth Kit | 0 – through 4.15.0 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
References
- https://github.com/sleuthkit/sleuthkit/issues/3583 issue-tracking
- https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/hfs.c#L4249-L4318 technical-description
- The Sleuth Kit sleuthkit-4.15.0 Release Notes release-notes
- https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read technical-description
- VulnCheck Advisory: The Sleuth Kit through 4.15.0 Heap Out-of-Bounds Read via HFS+ decmpfs Header third-party-advisory