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,...

EUVD-2026-67947

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-2026-13735

Zephyr RTOS WireGuard implementation in subsys/net/lib/wireguard/wg_crypto.c accepted 16-byte keepalive data messages before verifying the Poly1305 authentication tag, allowing a network attacker with a valid receiver index to forge keepalive packets without possessing the session key. The impact...

CVE-2026-13734 Zephyr WireGuard mutates peer state before anti-replay check, enabling capture-replay endpoint hijack

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

CVE-2026-13734 Zephyr WireGuard mutates peer state before anti-replay check, enabling capture-replay endpoint hijack

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

CVE-2026-13734

Zephyr RTOS's WireGuard data-plane receive handler wg_process_data_message() in subsys/net/lib/wireguard/wg_crypto.c validated the anti-replay counter only after committing several peer-state mutations (endpoint roaming update, liveness timers, and keypair rotation). Because the AEAD tag authenti...

CVE-2026-13734

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

EUVD-2026-67946

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

CVE-2026-13734 Zephyr WireGuard mutates peer state before anti-replay check, enabling capture-replay endpoint hijack

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

CVE-2026-13734: Authentication Bypass by Capture-replay

Zephyr's WireGuard VPN data-plane receive handler wgprocessdatamessage in subsys/net/lib/wireguard/wgcrypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGETRANSPORTDATA packet succeeded, the code committed several peer-state changes — updatepeeraddr endpoint roami...

CVE-2026-13735: Authentication Bypass by Spoofing

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,...

PT-2026-83323

Zephyr's WireGuard implementation in subsys/net/lib/wireguard/wg crypto.c mishandled keepalive packets. In wg process data message, 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...

PT-2026-83322

Zephyr's WireGuard VPN data-plane receive handler wg process data message in subsys/net/lib/wireguard/wg crypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGE TRANSPORT DATA packet succeeded, the code committed several peer-state changes — update peer addr endpoi...

Linux Network Device Driver Heap Buffer Overflow DoS

The vulnerability of the wgnetnsexitrtnl function in the drivers/net/wireguard/device.c file of the Linux kernel’s network device driver module is related to the occurrence of mutual locking. Exploiting this vulnerability could allow a attacker to cause a service failure...

vopono v0.10.21

vopono is a tool to run applications through VPN tunnels via temporary network namespaces. This allows you to run only a handful of applications through different VPNs simultaneously, whilst keeping your main connection as normal. vopono includes built-in killswitches for both Wireguard and...

tailscale v1.102.3

Tailscale https://tailscale.com Private WireGuard® networks made easy Overview This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees ...

CVE-2026-66785 Submariner: submariner: missing validation of remote endpoint subnets and clusterid enables cross-cluster traffic hijack

A flaw was found in Submariner. This vulnerability allows a malicious cluster spoke to redirect network traffic from other connected clusters peer clusters by publishing a specially crafted network endpoint. The system fails to properly validate the network subnets provided by the malicious...

EUVD-2026-62339

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-2026-58085

The wg(4) driver in FreeBSD contains a flaw where it fails to verify the success of the MAC verification step after dispatching a decrypt operation to the OpenCrypto framework (OCF) . This allows the driver to silently accept packets with an invalid Poly1305 authentication tag. A remote attacker ...

CVE-2026-58085: Improper Verification of Cryptographic Signature

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...