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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54632
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 20:16:47 UTC
Updated2026-09-30 17:51:56 UTC
DescriptionSIPSorcery 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.007180000 probability, percentile 0.538610000 (date 2026-10-31)

Problem Types: CWE-20 | CWE-755 | CWE-20 CWE-20: Improper Input Validation | CWE-755 CWE-755: Improper Handling of Exceptional Conditions

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sipsorcery-org Sipsorcery affected < 10.0.9 Not specified

References

ReferenceSourceLinkTags
github.com/sipsorcery-org/sipsorcery/pull/1677 [email protected] github.com
github.com/sipsorcery-org/sipsorcery/security/advisories/GHSA-28gm-jrmw-... [email protected] github.com
github.com/sipsorcery-org/sipsorcery/commit/bdb76cbc0c7216e3126f743fb78e... [email protected] github.com
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