CVE-2026-54632

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (52nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 28, 2026

Last Modified

September 30, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
Patch available. Sources: github_pr, github, github_commit.
githubMentions a patch (unverified)

Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS) · Advisory · sipsorcery-org/sipsorcery · GitHub

https://github.com/sipsorcery-org/sipsorcery/security/advisories/GHSA-28gm-jrmw-xx93
github_pr

Add minimum length checks for packets received on the RTP channel and for STUN attributes

Fix merged in sipsorcery-org/sipsorcery PR #1677 on 2026-06-07 — awaiting tagged release

https://github.com/sipsorcery-org/sipsorcery/pull/1677
github_commit

commit bdb76cbc0c72 (sipsorcery-org/sipsorcery)

Fix landed in sipsorcery-org/sipsorcery commit bdb76cbc0c72 — awaiting tagged release

https://github.com/sipsorcery-org/sipsorcery/commit/bdb76cbc0c7216e3126f743fb78e8525af56cea2

Vendor Advisories for CVE-2026-54632(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFix by version rangeDependents
SIPSorcery1.3.0-PRE ... 8.0.9 (110 versions)
  • every version up to 10.0.9: fixed in 10.0.9
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-07 00:05 UTCEG score recompute
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-05 02:43 UTCEG score recompute
  8. 2026-10-04 23:22 UTCEPSS rescore
  9. 2026-10-04 07:09 UTCEG score recompute
  10. 2026-10-03 14:26 UTCEPSS rescore
  11. 2026-10-02 18:23 UTCEG score recompute
  12. 2026-10-02 17:56 UTCEPSS rescore
  13. 2026-10-01 19:50 UTCEPSS rescore
  14. 2026-09-30 18:11 UTCEG score recompute
  15. 2026-09-30 15:03 UTCEPSS rescore
  16. 2026-09-29 15:22 UTCEPSS rescore
  17. 2026-09-29 07:44 UTCEG score recompute
  18. 2026-09-28 13:51 UTCEPSS rescore
  19. 2026-09-28 03:22 UTCEG score recompute
  20. 2026-09-27 13:48 UTCEPSS rescore
  21. 2026-09-26 15:59 UTCEPSS rescore
  22. 2026-09-25 06:12 UTCEG score recompute
  23. 2026-09-24 14:04 UTCEPSS rescore
  24. 2026-09-23 21:55 UTCEG score recompute
  25. 2026-09-23 17:54 UTCEPSS rescore
Show 16 more
  1. 2026-09-22 21:41 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-20 00:35 UTCEG score recompute
  4. 2026-09-19 05:16 UTCEG score recompute
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 02:05 UTCEG score recompute
  7. 2026-09-17 19:31 UTCEPSS rescore
  8. 2026-09-17 01:40 UTCEG score recompute
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 05:53 UTCEG score recompute
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 15:34 UTCEG score recompute
  13. 2026-09-15 15:02 UTCEG score recompute
  14. 2026-09-14 20:27 UTCEG score recompute
  15. 2026-07-30 13:33 UTCEG score recompute
  16. 2026-07-28 17:21 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-54632?
CVE-2026-54632 is a high vulnerability published on July 28, 2026. 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…
When was CVE-2026-54632 disclosed?
CVE-2026-54632 was first published on July 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54632 actively exploited?
CVE-2026-54632 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54632?
CVE-2026-54632 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54632?
A fix for CVE-2026-54632 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54632 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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