The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfsdecompresslzvnattr() that allows attackers to…
CVE-2026-120454
The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfsdecompresslzvnattr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressedsize in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.
Assessment
- CVSS
- 6.8 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 2 November 2026
- Last updated
- 2 November 2026
- Affected
- The Sleuth Kit · The Sleuth Kit
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://github.com/sleuthkit/sleuthkit/issues/3583
- https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169
- https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0
- https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read
- https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression
- https://nvd.nist.gov/vuln/detail/CVE-2026-120454
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