CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Xcitium Client Security (XCS) before 13.8.2.10019 and Comodo Internet Security (CIS) through 12.3.4.8162 (fix expected by 2026 Q3) contain an integer underflow vulnerability in the firewall driver Inspect.sys that allows remote unauthenticated attackers to crash the system by sending a crafted IPv6 packet with a declared payload length smaller than the sum of its extension-header lengths. The unsigned 64-bit payload-length value underflows to a near-maximal integer, triggering an out-of-bounds read and oversized memcpy in the Windows kernel at DISPATCH_LEVEL, resulting in a blue screen of death even on hosts with all ports blocked.
Засегнати продукти
- Xcitium (formerly Comodo Security Solutions) Comodo Internet Security: до 12.3.4.8162
- Xcitium Xcitium Client Security (XCS): преди 13.8.2.10019
Вид слабост
История
- 7 юни 2026 Публикувано
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-49494
- https://nvd.nist.gov/vuln/detail/CVE-2026-49494
- https://malwaretech.com/2026/06/exploiting-a-remote-kernel-vulnerability-in-comodo-internet-security.html
- https://github.com/MalwareTech/ComoDoS
- https://updates.xcitium.com/#note11312
- https://www.vulncheck.com/advisories/xcitium-client-security-comodo-internet-security-remote-dos