CVE-2026-120454mediumCWE-476

CVE-2026-120454: medium-severity vulnerability in The Sleuth Kit

The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.8epss 0.1%
The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfs_decompress_lzvn_attr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressed_size in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
The Sleuth Kit · The Sleuth Kit
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — The Sleuth Kit

In the same product, most dangerous first.

CVE-2019-1010065—CVE-2019-1010065EPSS 1.4%CVE-2026-120453MEDIUMThe Sleuth Kit through 4.15.0 Heap Out-of-Bounds Read via HFS+ decmpfs HeaderEPSS 0.2%