High severity · published Apr 8, 2026
CVE-2026-40026
Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read
7.1
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SL
sleuthkit · sleuthkit
through 4.14.0 · source: vendor
TS
The Sleuth Kit · Sleuthkit
before 4.14.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40026
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40026
issue-tracking
https://github.com/sleuthkit/sleuthkit/pull/3445
patch
https://github.com/sleuthkit/sleuthkit/commit/a95b0ac21733b059a517aaefa667a17e1bcbdee1
vendor-advisory
https://mobasi.ai/sentinel
third-party-advisory
https://www.vulncheck.com/advisories/sleuth-kit-iso9660-susp-extension-reference-out-of-bounds-read
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