WS-2026-0040
Published:August 28, 2026
Updated:August 31, 2026
TurnServer.ReceiveUdpAsync places its generic catch (Exception) outside the while receive loop, and Start() launches the loop fire-and-forget with no supervision or restart. A single pre-authentication UDP datagram whose STUN header first byte is in the range 0x80 to 0xFF causes STUNHeader.ParseSTUNHeader to throw ApplicationException, which unwinds past the loop and terminates it. The TURN UDP relay is then dead for all clients until the process is restarted. Fixed in 10.0.14.
Affected Packages
https://github.com/sipsorcery-org/sipsorcery.git (GITHUB):
Affected version(s) >=v10.0.5 <v10.0.14Fix Suggestion:
Update to version v10.0.14sipsorcery (NUGET):
Affected version(s) >=10.0.5 <10.0.14Fix Suggestion:
Update to version 10.0.14Related Resources (2)
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Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncaught Exception