{"id":"CVE-2026-4424","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4424","generatedAt":"2026-10-28T04:37:35.056Z","title":"This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods.","description":"A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.","published":"2026-03-19T15:16:28.000Z","lastModified":"2026-10-14T20:17:46.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["libarchive/libarchive","redhat/hardened images","redhat/openshift container platform","redhat/openshift container platform for arm64","redhat/openshift container platform for power","redhat/enterprise linux","redhat/enterprise linux server aus"],"epss":{"score":0.01259,"percentile":0.69442,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:10065","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:10097","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11768","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:12071","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:12274","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13812","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14773","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14937","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:15087","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16008","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16009","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16030","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16174","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:17596","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19724","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19725","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:20040","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:21690","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:25096","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:72502","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82304","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82322","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82347","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82354","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82372","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82857","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82888","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8492","tags":["Third 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BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}