{"id":12421,"date":"2026-09-04T18:59:23","date_gmt":"2026-09-04T10:59:23","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-14191"},"modified":"2026-09-04T18:59:23","modified_gmt":"2026-09-04T10:59:23","slug":"cve-2026-14191","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-14191","title":{"rendered":"CVE-2026-14191 [HIGH] &#8211; An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and"},"content":{"rendered":"<p>An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in a set is processed; subsequent .rev files supply an independent RecNum value that is validated against that file&#8217;s own TotalCount field but never against the actual size of RecItems. A crafted set of two or more .rev files can therefore write an attacker-controlled 32-bit value (the header&#8217;s RevCRC field) to RecItems[RecNum] at an attacker-controlled offset up to 65534 * sizeof(RecVolItem) bytes past the allocation, corrupting adjacent heap objects. Triggering requires the victim to run a recovery\/test operation on an attacker-supplied .rev set (for example &#8216;unrar t x.part1.rev&#8217;, WinRAR &#8216;Repair archive&#8217;, or auto-recovery when extracting a volume set with a missing .rar part). This is the RAR5-path sibling of CVE-2023-40477 (which was fixed in the RAR3 path only in WinRAR 6.23). Fixed in WinRAR \/ RAR 7.23.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-12421","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/12421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}