CVE Catalog

CVE-2026-54632

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.72%

52th percentile - higher than 52% of all known CVEs

Summary

SIPSorcery before 10.0.9 has a vulnerability in RTP packet and STUN attribute handling, where insufficient length checks can allow a remote attacker to close the channel, terminating the active RTP or WebRTC media session.

Risk Assessment

A remote attacker can disrupt an active media session, leading to denial of service for communication services, without requiring authentication.

Recommendation

Update SIPSorcery to version 10.0.9 or later, which fixes this issue.

Related vulnerabilities

Original NVD description (English source)

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 UdpReceiver.EndReceiveFrom closes the channel when those operations raise a non-socket exception. A remote party can send a single short RTP packet or malformed zero-to-seven-byte STUN address attribute to the shared RTP/ICE socket, including during ICE connectivity checks before DTLS or STUN MESSAGE-INTEGRITY verification, and terminate the active RTP or WebRTC media session. The attacker must reach or learn the advertised ephemeral RTP/ICE port, but no authentication or user interaction is required, and the impact is limited to availability. This issue is fixed in version 10.0.9.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS