CVE-2026-73460

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

On affected platforms running Arista EOS with IS-IS graceful restart enabled, an unauthenticated attacker who can inject a malformed IS-IS LSP PDU packet can cause the IS-IS graceful restart procedure to terminate prematurely. This may result in traffic loss following a restart event.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Security Advisory 0160 - Arista

https://www.arista.com/en/support/advisories-notices/security-advisory/24716-security-advisory-0160

Vendor Advisories for CVE-2026-73460(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 16× in last 7d / 28× 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. 2026-09-24 11:04 UTCEG score recompute
  2. 2026-09-24 11:04 UTCGHSA enrichment
  3. 2026-09-23 17:54 UTCEPSS rescore
  4. 2026-09-23 09:11 UTCEG score recompute
  5. 2026-09-23 09:11 UTCGHSA enrichment
  6. 2026-09-22 07:18 UTCEG score recompute
  7. 2026-09-22 07:18 UTCGHSA enrichment
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-21 05:25 UTCEG score recompute
  10. 2026-09-21 05:25 UTCGHSA enrichment
  11. 2026-09-20 20:16 UTCEPSS rescore
  12. 2026-09-20 03:31 UTCEG score recompute
  13. 2026-09-20 03:31 UTCGHSA enrichment
  14. 2026-09-19 01:38 UTCEG score recompute
  15. 2026-09-19 01:38 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-17 23:45 UTCEG score recompute
  18. 2026-09-17 23:45 UTCGHSA enrichment
  19. 2026-09-16 21:02 UTCEG score recompute
  20. 2026-09-16 21:02 UTCGHSA enrichment
  21. 2026-09-16 19:44 UTCEG score recompute
  22. 2026-09-16 19:44 UTCGHSA enrichment
  23. 2026-09-16 19:12 UTCEG score recompute
  24. 2026-09-16 19:12 UTCGHSA enrichment
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 3 more
  1. 2026-09-16 00:25 UTCEG score recompute
  2. 2026-09-15 23:33 UTCEG score recompute
  3. 2026-09-15 23:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73460?
CVE-2026-73460 is a medium vulnerability published on September 15, 2026. On affected platforms running Arista EOS with IS-IS graceful restart enabled, an unauthenticated attacker who can inject a malformed IS-IS LSP PDU packet can cause the IS-IS graceful restart procedure to terminate prematurely. This may result in traffic loss following a restart event.
When was CVE-2026-73460 disclosed?
CVE-2026-73460 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73460 actively exploited?
CVE-2026-73460 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 91.7% of all scored CVEs.
What is the CVSS score of CVE-2026-73460?
CVE-2026-73460 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-73460?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73460, 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-2026-73460

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