CVE-2026-13735 WireGuard keepalive transport-data messages accepted without Poly1305 authentication

Zephyr's WireGuard implementation in subsys/net/lib/wireguard/wgcrypto.c mishandled keepalive packets. In wgprocessdatamessage, any type-4 transport-data message whose payload was exactly 16 bytes an empty plaintext plus a bare Poly1305 tag, i.e. a keepalive was accepted and returned immediately,...

CVE-2026-58085 Missing MAC validation in wg(4) packet decryption

After dispatching a decrypt operation to OCF and receiving the result, the wg4 driver failed to check whether the MAC verification step succeeded. The driver thus silently accepted packets with an invalid Poly1305 authentication tag. A remote attacker who can send UDP packets to a WireGuard...

CVE-2026-2968: Improper Verification of Cryptographic Signature

A vulnerability was detected in Cesanta Mongoose up to 7.20. This impacts the function mgchacha20poly1305decrypt of the file /src/tlschacha20.c of the component Poly1305 Authentication Tag Handler. The manipulation results in improper verification of cryptographic signature. The attack may be...