{"id":"CVE-2026-120454","title":"The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression","summary":"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…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-476"],"vendor":"The Sleuth Kit","product":"The Sleuth Kit","affected":["the_sleuth_kit <= 4.15.0"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:44:10.659258Z"},"exploitAvailable":true,"published":"2026-11-02","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:44:51.763Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120454","references":[{"url":"https://github.com/sleuthkit/sleuthkit/issues/3583"},{"url":"https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169"},{"url":"https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0","label":"The Sleuth Kit sleuthkit-4.15.0 Release Notes"},{"url":"https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read"},{"url":"https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression","label":"VulnCheck Advisory: The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression"}],"tags":["cve.org","exploit-available"],"epss":0.00121,"epssPercentile":0.0194,"ingestedAt":"2026-11-05T19:30:42.660Z","slug":"CVE-2026-120454","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `the_sleuth_kit <= 4.15.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":234910,"id":"CVE-2026-120454","ts":1793918477130,"field":"exploit_available","old":"false","new":"true"}]}