{"id":"CVE-2026-120740","title":"Hivex: hivex: denial of service via out-of-bounds read in big-data block processing","summary":"A flaw was found in hivex. By supplying a specially crafted Windows registry hive file, an attacker can trigger an out-of-bounds memory read when hivex parses registry values containing malformed large data block lists. This issue can ca…","severity":"low","cvss":2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Red Hat","product":"hivex","affected":["hivex (all versions)","hivex (all versions)","hivex (all versions)","virt-devel:rhel/hivex (all versions)","virt:rhel/hivex (all versions)","hivex (all versions)"],"published":"2026-11-02","updated":"2026-11-02","sourceUpdated":"2026-11-02T22:15:26.318Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120740","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-120740"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565405","label":"RHBZ#2565405"}],"tags":["cve.org"],"epss":0.00237,"epssPercentile":0.14847,"ingestedAt":"2026-11-05T19:30:42.872Z","slug":"CVE-2026-120740","body":"## Overview\n\nA flaw was found in hivex. By supplying a specially crafted Windows registry hive file, an attacker can trigger an out-of-bounds memory read when hivex parses registry values containing malformed large data block lists. This issue can cause the application processing the registry file to crash, resulting in a Denial of Service (DoS).\n\n## Affected\n\n- `hivex (all versions)`\n- `hivex (all versions)`\n- `hivex (all versions)`\n- `virt-devel:rhel/hivex (all versions)`\n- `virt:rhel/hivex (all versions)`\n- `hivex (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":11,"depthScoreParts":{"impact":11,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}