CVE-2026-84387

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.2Exploit: None knownExposed: 0

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

A improper neutralization of special elements used in a command ('command injection') vulnerability in Fortinet FortiSandbox 5.2.0, FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9 may allow attacker to execute unauthorized code or commands via

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity72% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
No patch confirmed yet.
generic

Just a moment

https://fortiguard.fortinet.com/psirt/FG-IR-26-167

Vendor Advisories for CVE-2026-84387(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 27× in last 7d / 50× 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. 2026-09-21 04:11 UTCEG score recompute
  2. 2026-09-21 04:11 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 15:28 UTCGHSA enrichment
  5. 2026-09-20 02:45 UTCEG score recompute
  6. 2026-09-20 02:45 UTCGHSA enrichment
  7. 2026-09-19 14:03 UTCGHSA enrichment
  8. 2026-09-19 01:20 UTCEG score recompute
  9. 2026-09-19 01:20 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 12:38 UTCGHSA enrichment
  12. 2026-09-17 23:55 UTCEG score recompute
  13. 2026-09-17 23:55 UTCGHSA enrichment
  14. 2026-09-17 19:32 UTCEPSS rescore
  15. 2026-09-17 10:24 UTCGHSA enrichment
  16. 2026-09-16 21:41 UTCEG score recompute
  17. 2026-09-16 21:41 UTCGHSA enrichment
  18. 2026-09-16 14:09 UTCEPSS rescore
  19. 2026-09-16 08:57 UTCEG score recompute
  20. 2026-09-16 08:57 UTCGHSA enrichment
  21. 2026-09-16 05:15 UTCEPSS rescore
  22. 2026-09-15 19:46 UTCGHSA enrichment
  23. 2026-09-15 07:03 UTCEG score recompute
  24. 2026-09-15 07:03 UTCGHSA enrichment
  25. 2026-09-15 03:12 UTCEPSS rescore
Show 25 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-14 18:20 UTCGHSA enrichment
  3. 2026-09-14 04:50 UTCEG score recompute
  4. 2026-09-14 04:50 UTCGHSA enrichment
  5. 2026-09-13 16:07 UTCGHSA enrichment
  6. 2026-09-13 03:24 UTCEG score recompute
  7. 2026-09-13 03:24 UTCGHSA enrichment
  8. 2026-09-12 14:41 UTCGHSA enrichment
  9. 2026-09-12 01:58 UTCEG score recompute
  10. 2026-09-12 01:58 UTCGHSA enrichment
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 13:15 UTCEG score recompute
  14. 2026-09-11 13:15 UTCGHSA enrichment
  15. 2026-09-11 00:32 UTCGHSA enrichment
  16. 2026-09-10 11:49 UTCEG score recompute
  17. 2026-09-10 11:49 UTCGHSA enrichment
  18. 2026-09-09 23:06 UTCGHSA enrichment
  19. 2026-09-09 08:32 UTCGHSA enrichment
  20. 2026-09-08 19:48 UTCEG score recompute
  21. 2026-09-08 19:48 UTCGHSA enrichment
  22. 2026-09-08 18:13 UTCEG score recompute▲ 0.50
  23. 2026-09-08 17:28 UTCNVD updateCVSS v3 → 7.2 · severity → HIGH
  24. 2026-09-08 16:52 UTCEG score recompute
  25. 2026-09-08 16:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84387?
CVE-2026-84387 is a high vulnerability published on September 8, 2026. A improper neutralization of special elements used in a command ('command injection') vulnerability in Fortinet FortiSandbox 5.2.0, FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9 may allow attacker to execute unauthorized code or commands via <insert attack vector here>
When was CVE-2026-84387 disclosed?
CVE-2026-84387 was first published in the National Vulnerability Database on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84387 actively exploited?
CVE-2026-84387 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.5% of all scored CVEs.
What is the CVSS score of CVE-2026-84387?
CVE-2026-84387 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-84387?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84387, 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-2026-84387

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