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Openwrt vulnerabilities

Known CVEs affecting Openwrt products, prioritized by severity, with SEC.co remediation and detection guidance.

1 published vulnerability

• CVE-2026-55490MEDIUM 6.5

  OpenWrt's Emergency Access Daemon contains a flaw that allows any attacker on your local network to crash it by sending a specially crafted network packet. The vulnerability exists in how the daemon handles message length calculations—it performs arithmetic that underflows (wraps around to an extremely large number), which is then misused as a copy size, leading to a denial of service. This affects OpenWrt versions before 25.12.5.