CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, без вход и след действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
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'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'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 'unrar t x.part1.rev', WinRAR 'Repair archive', 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.
Засегнати продукти
- RARLAB WinRAR: преди 7.23
- RARLAB RAR: преди 7.23
- RARLAB UnRAR: до 7.21
- RARLAB UnRAR.dll: преди 7.23
Вид слабост
История
- 1 юли 2026 Публикувано
Други уязвимости в RARLAB WinRAR
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-14191
- https://nvd.nist.gov/vuln/detail/CVE-2026-14191
- https://www.rarlab.com/download.htm
- https://nvd.nist.gov/vuln/detail/CVE-2023-40477
- https://www.securin.io/zero-days/cve-2026-14191-winrar-unrar-rar5-recovery-volume-rev-out-of-bounds-heap-write-in-recvolumes5-readheader