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

Quick assessment

Affected
sipsorcery-org sipsorcery
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SIPSorcery 是一个用于 C和 .NET 的 WebRTC、SIP 和 VoIP 库。在 10.0.9 版本之前，RTPChannel.OnRTPPacketReceived 以及 STUNAttribute.ParseMessageAttributes、STUNXORAddressAttribute 和 STUNAddressAttribute 的解析路径在索引处理不可信字节时，缺乏足够的长度检查；而 UdpReceiver.EndReceiveFrom 在这些操作抛出非套接字异常时会关闭通道。 远程攻击

CVSS 7.5 · High
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I. Basic Information for CVE-2026-54632

Vulnerability Information
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Vulnerability Title
SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sipsorcery-org sipsorcery < 10.0.9 -

II. Public POCs for CVE-2026-54632

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III. Intelligence Information for CVE-2026-54632

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Patches & Fixes for CVE-2026-54632 (2)

Vendor Advisories for CVE-2026-54632 (1)

IV. Related Vulnerabilities

Same weakness: CWE-20

V. Comments for CVE-2026-54632

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