CVE-2026-40026 Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read
An attacker can craft a malicious ISO image to trigger out-of-bounds reads and infinite loops in The Sleuth Kit, causing denial of service or information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-40026?
CVE-2026-40026 is a medium-severity memory corruption vulnerability in sleuthkit, published on 8 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-125
Which versions are affected by CVE-2026-40026?
It affects 1 product.
Products include Sleuthkit the Sleuth Kit.
How do I fix CVE-2026-40026?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-40026 being exploited?
There is no known exploitation of CVE-2026-40026 in the wild and no public exploit code.
Other vulnerabilities in sleuthkit
Sources
Also known as AZL-82001, DEBIAN-CVE-2026-40026, GHSA-3pvc-h22x-rq5v, UBUNTU-CVE-2026-40026.