CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и след действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's UFS and FFS image handler in NanaZip.Codecs.Archive.Ufs.cpp validates the superblock block size only against the MINBSIZE lower bound and does not validate the fs_fsize fragment size, allowing attacker-controlled 32-bit fields to flow into indirect-block, directory, and extraction buffer allocations. A tiny crafted UFS image can force multi-gigabyte allocations during open or extraction, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0.
Засегнати продукти
- M2Team NanaZip: < 6.5.1749.0
Вид слабост
История
- 10 юли 2026 Публикувано
Други уязвимости в M2Team NanaZip
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-55781
- https://nvd.nist.gov/vuln/detail/CVE-2026-55781
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-m34h-jf84-m74h
- https://github.com/M2Team/NanaZip/commit/6415b6bff70bc9c486b49cbbc1982724c67f8338
- https://github.com/M2Team/NanaZip/releases/tag/6.5.1749.0