๐Ÿ” CVE Alert

CVE-2026-66732

MEDIUM 5.9

Sonic 3 A.I.R. Missing Source Address Validation in ConnectionManager

CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th

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 CWE-346
Vendor eukaryot
Product sonic3air
Published Aug 6, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Affected Versions

Eukaryot / sonic3air
0 โ‰ค 26.03.28.0

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/Eukaryot/sonic3air/commit/2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f vulncheck.com: https://www.vulncheck.com/advisories/sonic-3-a-i-r-missing-source-address-validation-in-connectionmanager

Credits

Valentin Lobstein (Chocapikk)