Vulnerability · Published Apr 8, 2026 · Assigned by VulnCheck
CVE-2026-40026Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read
Medium 4.4
In plain English
A medium-severity out-of-bounds read in sleuthkit from sleuthkit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Official description
The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | sleuthkit | no fix listed | DEBIAN-CVE-2026-40026 |
| Debian:13 | sleuthkit | no fix listed | DEBIAN-CVE-2026-40026 |
| Debian:14 | sleuthkit | no fix listed | DEBIAN-CVE-2026-40026 |
| Ubuntu:22.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-40026 |
| Ubuntu:24.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-40026 |
| Ubuntu:25.10 | sleuthkit | no fix listed | UBUNTU-CVE-2026-40026 |
| Ubuntu:26.04:LTS | sleuthkit | no fix listed | UBUNTU-CVE-2026-40026 |
| Ubuntu:26.10 | sleuthkit | no fix listed | UBUNTU-CVE-2026-40026 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
References
- Pull Request issue-tracking
- Patch Commit patch
- Mobasi Sentinel Vulnerability Index vendor-advisory
- VulnCheck Advisory: Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read third-party-advisory