Out-of-bounds Read in Sleuthkit
CVE-2026-40026
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Sleuthkit — versions 0, a95b0ac21733b059a517aaefa667a17e1bcbdee1
- Sleuthkit The Sleuth Kit
Weakness classification (CWE)
References
- github.com/sleuthkit/sleuthkit/pull/3445 (issue-tracking, product, Issue Tracking)
- github.com/sleuthkit/sleuthkit/commit/a95b0ac21733b059a517aaefa667a17e1bcbdee1 (Patch, patch)
- mobasi.ai/sentinel (vendor-advisory, Third Party Advisory)
- www.vulncheck.com/advisories/sleuth-kit-iso9660-susp-extension-reference-out-of… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40026?
- CVE-2026-40026 is a medium-severity vulnerability in Sleuthkit, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2026-04-08.
- How severe is CVE-2026-40026?
- Medium severity. CVSS v3 base score is 4.4 out of 10.