CVE-2026-54632

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

CVE-2026-54632

SIPSorcery is a C#/.NET WebRTC, SIP, and VoIP library (NuGet). Prior to 10.0.9 , a single malformed UDP datagram sent to the RTP/ICE socket can remotely terminate an active media session (availability impact only). The root cause combines two issues: unchecked byte indexing in RTPChannel.OnRTPPac...

CVE-2026-54632 SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

CVE-2026-54632 SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

CVE-2026-54632 SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

EUVD-2026-78055

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

CVE-2026-54632: Improper Input Validation

SIPSorcery is a WebRTC, SIP, and VoIP library for C and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while...

GHSA-PFVM-W89X-94JW SIPSorcery: Malformed UDP datagram crashes TurnServer receive loop with no restart, disabling TURN UDP relay for all clients (DoS)

Summary 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 0x80–0xFF causes STUNHeader.ParseSTUNHeader...

SIPSorcery: Malformed UDP datagram crashes TurnServer receive loop with no restart, disabling TURN UDP relay for all clients (DoS)

Summary 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 0x80–0xFF causes STUNHeader.ParseSTUNHeader...

Improper Handling of Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions due to improper exception handling in the ReceiveUdpAsync process. An attacker can cause the TURN UDP relay to become permanently unavailable for all clients by sending a single malformed UDP...

SIPSorcery vulnerable to Denial of Service via out-of-bounds read in SCTP SACK chunk parsing

Summary SctpSackChunk.ParseChunk reads the numGapAckBlocks and numDuplicateTSNs fields each up to 65535 directly from an attacker-controlled SCTP SACK chunk and loops that many times reading 4 bytes per iteration, with no validation of the counts against the chunk length or the receive buffer. A...

Improper Handling of Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions via the ParseChunk function. An attacker can cause the termination of the SCTP receive thread and disrupt all data channels by sending a specially crafted SCTP SACK chunk with manipulated...

GHSA-JWJP-4649-V8JP SIPSorcery vulnerable to Denial of Service via out-of-bounds read in SCTP SACK chunk parsing

Summary SctpSackChunk.ParseChunk reads the numGapAckBlocks and numDuplicateTSNs fields each up to 65535 directly from an attacker-controlled SCTP SACK chunk and loops that many times reading 4 bytes per iteration, with no validation of the counts against the chunk length or the receive buffer. A...

SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)

Impact A single malformed inbound UDP packet on the RTP/ICE socket can remotely terminate an active RTP or WebRTC media session. The packet receive handler indexes packet and STUN attribute bytes without sufficient length checks and throws, and the UDP receive loop converted any such exception in...

GHSA-28GM-JRMW-XX93 SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)

Impact A single malformed inbound UDP packet on the RTP/ICE socket can remotely terminate an active RTP or WebRTC media session. The packet receive handler indexes packet and STUN attribute bytes without sufficient length checks and throws, and the UDP receive loop converted any such exception in...

PT-2026-65633

Impact A single malformed inbound UDP packet on the RTP/ICE socket can remotely terminate an active RTP or WebRTC media session. The packet receive handler indexes packet and STUN attribute bytes without sufficient length checks and throws, and the UDP receive loop converted any such exception in...

PT-2026-65684

Impact A single malformed inbound UDP packet on the RTP/ICE socket can remotely terminate an active RTP or WebRTC media session. The packet receive handler indexes packet and STUN attribute bytes without sufficient length checks and throws, and the UDP receive loop converted any such exception in...