{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"sleuthkit/sleuthkit","product":"The Sleuth Kit","source":"CNA: VulnCheck","vendor":"The Sleuth Kit","versions":[{"lessThanOrEqual":"4.15.0","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-120454","cwes":["CWE-476"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.8,"severity":"medium","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":5.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793629751639,"publishedAt":1793629751639,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/sleuthkit/sleuthkit/issues/3583"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression"}],"remediation":[],"revision":"9c0cb944339634b1e22506c5c3fcbf70b409f096b7a5156d3cfab3cec2bcb713","sources":[{"modifiedAt":1793629751639,"name":"CNA: VulnCheck","retrievedAt":1793632134280,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120454"}],"ssvc":null,"status":"published","title":"The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression","updatedAt":1793632134280}