CVE-2026-8480

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-07-01. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

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

A vulnerability was discovered on Stormshield Network Security 4.3.0  to 4.3.41 (included), 4.4.0 to 4.8.15 (included) , 5.0.2 EA to 5.0.5 (included)

A revoked client certificate can still be used to authenticate to the captive‑admin portal, allowing an attacker who possesses the revoked certificate to gain administrative access.

CVSS v3
4.3
EG Score
4.3(high)
EPSS
0.5%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jul 3, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Connection possible to the administration portal with revoked certificate | Stormshield security

https://advisories.stormshield.eu/2026-002/

Vendor Advisories for CVE-2026-8480(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 14× in last 7d / 14× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 14:39 UTCEG score recompute
  4. 2026-07-06 14:39 UTCGHSA enrichment
  5. 2026-07-05 15:08 UTCEG score recompute
  6. 2026-07-05 15:08 UTCGHSA enrichment
  7. 2026-07-04 15:38 UTCEG score recompute
  8. 2026-07-04 15:38 UTCGHSA enrichment
  9. 2026-07-03 16:07 UTCEG score recompute
  10. 2026-07-03 16:07 UTCGHSA enrichment
  11. 2026-07-02 16:38 UTCEG score recompute
  12. 2026-07-02 16:38 UTCGHSA enrichment
  13. 2026-07-01 17:08 UTCEG score recompute
  14. 2026-07-01 17:06 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8480?
CVE-2026-8480 is a medium vulnerability published on July 1, 2026. A vulnerability was discovered on Stormshield Network Security 4.3.0 to 4.3.41 (included), 4.4.0 to 4.8.15 (included) , 5.0.2 EA to 5.0.5 (included) A revoked client certificate can still be used to authenticate to the captive‑admin portal, allowing an attacker who possesses the revoked certificate…
When was CVE-2026-8480 disclosed?
CVE-2026-8480 was first published in the National Vulnerability Database on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8480 actively exploited?
CVE-2026-8480 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8480?
CVE-2026-8480 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-8480?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8480, 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

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