CVE-2026-66732

Sonic 3 A.I.R. before commit 2492d18 contains a missing source address validation vulnerability in ConnectionManager where established connections are resolved by a two-byte local connection handle alone without verifying that the datagram source address matches the registered remote address for the connection. An on-path attacker who can observe cleartext UDP traffic can inject arbitrary packets into any established session by forging the two-byte connection identifier, enabling session termination via TerminateConnectionPacket, arbitrary channel message forgery, and forged request responses without requiring IP address spoofing.

• CWE-346

• https://github.com/Eukaryot/sonic3air/commit/2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f
• https://www.vulncheck.com/advisories/sonic-3-a-i-r-missing-source-address-validation-in-connectionmanager

Published

Aug 6, 2026

Last Modified

Sep 24, 2026

Status

Deferred

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