CVE-2026-66732

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Sonic 3 A.I.R. before commit 2492d18 contains a missing source address validation vulnerability in ConnectionManager where established connections are resolved by a two-byte local connection handle alone without verifying that the datagram source address matches the registered remote address for the connection. An on-path attacker who can observe cleartext UDP traffic can inject arbitrary packets into any established session by forging the two-byte connection identifier, enabling session termination via TerminateConnectionPacket, arbitrary channel message forgery, and forged request responses without requiring IP address spoofing.

CVSS v3
5.9
EG Score
5.9(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: Track

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
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 6, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Sonic 3 A.I.R. Missing Source Address Validation in ConnectionManager | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sonic-3-a-i-r-missing-source-address-validation-in-connectionmanager
github_commit

commit 2492d1882cd2 (Eukaryot/sonic3air)

Fix landed in Eukaryot/sonic3air commit 2492d1882cd2 — awaiting tagged release

https://github.com/Eukaryot/sonic3air/commit/2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f

Vendor Advisories for CVE-2026-66732(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 37× 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. 2026-08-20 02:49 UTCEG score recompute
  2. 2026-08-20 02:49 UTCGHSA enrichment
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-19 02:29 UTCGHSA enrichment
  5. 2026-08-18 02:05 UTCEG score recompute
  6. 2026-08-18 02:04 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 01:41 UTCEG score recompute
  9. 2026-08-17 01:41 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 01:21 UTCEG score recompute
  12. 2026-08-16 01:21 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-15 01:01 UTCGHSA enrichment
  15. 2026-08-14 00:41 UTCEG score recompute
  16. 2026-08-14 00:41 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 00:21 UTCEG score recompute
  19. 2026-08-13 00:21 UTCGHSA enrichment
  20. 2026-08-12 13:51 UTCEPSS rescore
  21. 2026-08-12 00:02 UTCEG score recompute
  22. 2026-08-12 00:02 UTCGHSA enrichment
  23. 2026-08-11 00:00 UTCEPSS rescore
  24. 2026-08-10 23:42 UTCGHSA enrichment
  25. 2026-08-09 23:22 UTCEG score recompute
Show 12 more
  1. 2026-08-09 23:22 UTCGHSA enrichment
  2. 2026-08-09 13:47 UTCEPSS rescore
  3. 2026-08-08 23:03 UTCEG score recompute
  4. 2026-08-08 23:03 UTCGHSA enrichment
  5. 2026-08-08 16:37 UTCEPSS rescore
  6. 2026-08-07 22:43 UTCEG score recompute
  7. 2026-08-07 22:43 UTCGHSA enrichment
  8. 2026-08-06 22:24 UTCEG score recompute
  9. 2026-08-06 22:24 UTCGHSA enrichment
  10. 2026-08-06 13:36 UTCEG score recompute
  11. 2026-08-06 13:09 UTCEG score recompute
  12. 2026-08-06 13:08 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66732?
CVE-2026-66732 is a medium vulnerability published on August 6, 2026. Sonic 3 A.I.R. before commit 2492d18 contains a missing source address validation vulnerability in ConnectionManager where established connections are resolved by a two-byte local connection handle alone without verifying that the datagram source address matches the registered remote address for…
When was CVE-2026-66732 disclosed?
CVE-2026-66732 was first published in the National Vulnerability Database on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66732 actively exploited?
CVE-2026-66732 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-66732?
CVE-2026-66732 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-66732?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66732, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-66732

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