CVE-2026-84190

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. 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 weekElevated
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: Elevated riskExposed: 0

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

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
48(Track*)
EG Risk 48/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 1, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

LibreNMS before 26.5.0 Remote Code Execution via AboutController | Advisories | VulnCheck

https://www.vulncheck.com/advisories/librenms-before-26.5.0-remote-code-execution-via-aboutcontroller
github Patch Available🟡 PoC Available

Remote Code Execution via AboutController in LibreNMS · Advisory · librenms/librenms · GitHub

https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7

Vendor Advisories for CVE-2026-84190(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
librenms/librenms1.19 ... 26.4.1 (154 versions)26.5.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 78× 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 05:08 UTCEG score recompute
  2. 2026-09-21 05:08 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 17:10 UTCGHSA enrichment
  5. 2026-09-20 05:49 UTCGHSA enrichment
  6. 2026-09-19 18:30 UTCEG score recompute
  7. 2026-09-19 18:30 UTCGHSA enrichment
  8. 2026-09-19 07:11 UTCGHSA enrichment
  9. 2026-09-18 19:52 UTCEG score recompute
  10. 2026-09-18 19:52 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 08:33 UTCGHSA enrichment
  13. 2026-09-17 21:13 UTCEG score recompute
  14. 2026-09-17 21:13 UTCGHSA enrichment
  15. 2026-09-17 19:32 UTCEPSS rescore
  16. 2026-09-17 09:54 UTCGHSA enrichment
  17. 2026-09-16 22:34 UTCEG score recompute
  18. 2026-09-16 22:34 UTCGHSA enrichment
  19. 2026-09-16 14:09 UTCEPSS rescore
  20. 2026-09-16 11:02 UTCEG score recompute
  21. 2026-09-16 11:02 UTCGHSA enrichment
  22. 2026-09-16 05:15 UTCEPSS rescore
  23. 2026-09-15 23:42 UTCGHSA enrichment
  24. 2026-09-15 12:23 UTCEG score recompute
  25. 2026-09-15 12:23 UTCGHSA enrichment
Show 53 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-15 01:01 UTCGHSA enrichment
  4. 2026-09-14 13:42 UTCGHSA enrichment
  5. 2026-09-14 02:14 UTCEG score recompute
  6. 2026-09-14 02:14 UTCGHSA enrichment
  7. 2026-09-13 14:55 UTCGHSA enrichment
  8. 2026-09-13 03:25 UTCGHSA enrichment
  9. 2026-09-12 16:06 UTCEG score recompute
  10. 2026-09-12 16:06 UTCGHSA enrichment
  11. 2026-09-12 04:47 UTCGHSA enrichment
  12. 2026-09-11 17:27 UTCEG score recompute
  13. 2026-09-11 17:27 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 05:30 UTCGHSA enrichment
  17. 2026-09-10 18:11 UTCEG score recompute
  18. 2026-09-10 18:11 UTCGHSA enrichment
  19. 2026-09-10 06:52 UTCGHSA enrichment
  20. 2026-09-09 19:33 UTCGHSA enrichment
  21. 2026-09-09 08:10 UTCEG score recompute
  22. 2026-09-09 08:10 UTCGHSA enrichment
  23. 2026-09-08 22:01 UTCEPSS rescore
  24. 2026-09-08 20:51 UTCGHSA enrichment
  25. 2026-09-08 04:20 UTCGHSA enrichment
  26. 2026-09-07 17:00 UTCEG score recompute
  27. 2026-09-07 17:00 UTCGHSA enrichment
  28. 2026-09-07 05:40 UTCGHSA enrichment
  29. 2026-09-06 18:21 UTCEG score recompute
  30. 2026-09-06 18:21 UTCGHSA enrichment
  31. 2026-09-06 13:48 UTCEPSS rescore
  32. 2026-09-06 07:01 UTCGHSA enrichment
  33. 2026-09-05 19:42 UTCEG score recompute
  34. 2026-09-05 19:42 UTCGHSA enrichment
  35. 2026-09-05 15:31 UTCEPSS rescore
  36. 2026-09-05 08:23 UTCGHSA enrichment
  37. 2026-09-04 21:04 UTCEG score recompute
  38. 2026-09-04 21:04 UTCGHSA enrichment
  39. 2026-09-04 09:45 UTCEG score recompute
  40. 2026-09-04 09:45 UTCGHSA enrichment
  41. 2026-09-04 05:07 UTCEPSS rescore
  42. 2026-09-03 22:23 UTCGHSA enrichment
  43. 2026-09-03 11:02 UTCGHSA enrichment
  44. 2026-09-02 23:41 UTCEG score recompute
  45. 2026-09-02 23:41 UTCGHSA enrichment
  46. 2026-09-02 14:12 UTCEPSS rescore
  47. 2026-09-02 12:22 UTCGHSA enrichment
  48. 2026-09-02 01:01 UTCGHSA enrichment
  49. 2026-09-01 13:41 UTCEG score recompute
  50. 2026-09-01 13:41 UTCGHSA enrichment
  51. 2026-09-01 12:18 UTCEG score recompute
  52. 2026-09-01 11:43 UTCEG score recompute
  53. 2026-09-01 11:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84190?
CVE-2026-84190 is a high vulnerability published on September 1, 2026. LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable…
When was CVE-2026-84190 disclosed?
CVE-2026-84190 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update 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-2026-84190 actively exploited?
CVE-2026-84190 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 52.5% of all scored CVEs.
What is the CVSS score of CVE-2026-84190?
CVE-2026-84190 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-84190?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84190, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-84190

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