CVE-2026-54632Public exploitNetwork attack vectorHinoki check available

Media-session termination via unchecked UDP packet lengths

Published Sep 14, 2026 · Updated Sep 14, 2026

Denial of service in SIPSorcery 10.0.8 and earlier allows remote attackers to terminate active RTP or WebRTC media sessions. RTPChannel.OnRTPPacketReceived and STUN address parsers index undersized packet data, and UdpReceiver.EndReceiveFrom closes the channel on the resulting exception. Exploitation requires reaching or learning the advertised ephemeral RTP/ICE UDP port, but it precedes DTLS and STUN integrity checks and requires no authentication or user interaction.

CVSS severity7.5
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in SIPSorcery 10.0.8 and earlier allows remote attackers to terminate active RTP or WebRTC media sessions. RTPChannel.OnRTPPacketReceived and STUN address parsers index undersized packet data, and UdpReceiver.EndReceiveFrom closes the channel on the resulting exception. Exploitation requires reaching or learning the advertised ephemeral RTP/ICE UDP port, but it precedes DTLS and STUN integrity checks and requires no authentication or user interaction.

The record

CVE
CVE-2026-54632
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
SIPSorcery
Product
SIPSorcery
Classifications
CWE-755, CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 10.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SIPSorcery · SIPSorceryversion=< 10.0.9

Published CVSS scores

7.5SIPSorceryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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