Linux Distros Unpatched Vulnerability : CVE-2026-79977

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the...

UBUNTU-CVE-2026-79977

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977

The WireGuard VPN service in the Zephyr operating system (specifically in subsys/net/lib/wireguard/wg.c) is vulnerable to an off-path tunnel hijack. The handle_transport_data() function incorrectly updates the peer->endpoint by copying the source address of an unauthenticated transport-data me...

EUVD-2026-109140

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977 WireGuard peer endpoint learned from unauthenticated transport-data messages allows off-path tunnel hijack in Zephyr

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977 WireGuard peer endpoint learned from unauthenticated transport-data messages allows off-path tunnel hijack in Zephyr

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

CVE-2026-79977 WireGuard peer endpoint learned from unauthenticated transport-data messages allows off-path tunnel hijack in Zephyr

The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handletransportdata, when the 32-bit receiver index of an incoming transport-data message matched no session, the code both scheduled a new handshake and copied the...

Zephyr authorization issue vulnerability

A security vulnerability exists in Zephyr versions 4.4.0 through 4.4.2. It arises because the handletransportdata function within the WireGuard VPN service, when processing transmission data messages from sessions where the receive index does not match any session, fails to validate the data sour...