Threats Tagged 'cve-2026-53921'
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Threats Tagged 'cve-2026-53921'
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A critical stack-based buffer overflow vulnerability exists in the odhcpd DHCPv6 IA response handler used by OpenWrt. Versions prior to 25.12 are affected. The flaw allows writing beyond a fixed 512-byte stack buffer when processing DHCPv6 REQUEST packets with many IA options. The vulnerability is reachable remotely via unauthenticated UDP packets and runs with root privileges. This can lead to remote code execution, especially on embedded devices lacking typical memory protections. The issue has been fixed in OpenWrt version 25.12. Join the discussion | CVE Database V5 | 10/23/2026, 13:20:30 UTC Added: 10/23/2026, 13:31:01 UTC |
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