CVE-2026-54632

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-78055 (ENISA EUVD) · GHSA-28gm-jrmw-xx93 (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • 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 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.7% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
53rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

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.
GitHub advisoryMentions 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 pull request

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.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
nugetSIPSorcery @ 10.0.9 (fixes <= 10.0.8)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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 9× in last 7d / 41× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 07:44 UTCGHSA enrichmentGHSA-28gm-jrmw-xx93 · GitHub severity HIGH · GitHub CVSS 7.5
  2. 2026-11-01 07:44 UTCEG score recompute
  3. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  4. 2026-10-31 15:47 UTCEG score recompute
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  10. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  11. 2026-10-25 14:19 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  13. 2026-10-24 09:55 UTCEG score recompute
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  18. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  19. 2026-10-18 03:30 UTCEG score recompute
  20. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  21. 2026-10-17 04:03 UTCEG score recompute
  22. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
Show 48 more
  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-10-12 15:56 UTCEG score recompute
  3. 2026-10-11 19:39 UTCEG score recompute
  4. 2026-10-11 16:54 UTCEG score recompute
  5. 2026-10-11 14:17 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  11. 2026-10-07 00:05 UTCEG score recompute
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  14. 2026-10-05 02:43 UTCEG score recompute
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  16. 2026-10-04 07:09 UTCEG score recompute
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  18. 2026-10-02 18:23 UTCEG score recompute
  19. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  21. 2026-09-30 18:11 UTCEG score recompute
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  23. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  24. 2026-09-29 07:44 UTCEG score recompute
  25. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  26. 2026-09-28 03:22 UTCEG score recompute
  27. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  28. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  29. 2026-09-25 06:12 UTCEG score recompute
  30. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  31. 2026-09-23 21:55 UTCEG score recompute
  32. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  33. 2026-09-22 21:41 UTCEG score recompute
  34. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  35. 2026-09-20 00:35 UTCEG score recompute
  36. 2026-09-19 05:16 UTCEG score recompute
  37. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  38. 2026-09-18 02:05 UTCEG score recompute
  39. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  40. 2026-09-17 01:40 UTCEG score recompute
  41. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  42. 2026-09-16 05:53 UTCEG score recompute
  43. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  44. 2026-09-15 15:34 UTCEG score recompute
  45. 2026-09-15 15:02 UTCEG score recompute
  46. 2026-09-14 20:27 UTCEG score recompute
  47. 2026-07-30 13:33 UTCEG score recompute
  48. 2026-07-28 17:21 UTCEG score recomputeFirst assessed: 7.5 HIGH

Frequently asked(5)

What is CVE-2026-54632?
CVE-2026-54632 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-54632 published?
The CVE record for CVE-2026-54632 was published on July 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 30, 2026; the record at its source may have been updated since.
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 (53rd 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.

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