Tag: CVE-2026-53921

Critical CVEs

Critical OpenWrt DHCPv6 Flaw CVE-2026-53921 Allows Unauthenticated Remote Code Execution as Root

OpenWrt has released versions 24.10.8 and 25.12.5 to patch a critical DHCPv6 stack overflow vulnerability, CVE-2026-53921, rated 9.8 on CVSS 3.1. The…

AI-assisted audit Anthropic cgi-io CISA

July 28, 2026

Critical CVEs

CVE-2026-53921: Critical OpenWrt DHCPv6 Stack Overflow

CVE-2026-53921 is a critical stack overflow vulnerability in OpenWrt's odhcpd DHCPv6 server, rated 9.8 CVSS 3.1. An unauthenticated attacker can send a…

critical CVE-2026-53921 DHCPv6 odhcpd

July 28, 2026