CVE-2026-8658

HIGHNVD 8.86.0▼
EchelonGraph scoreMEDIUM confidence

Score 6.0 from GitHub Security Advisory published 2026-06-25. NVD baseline CVSS 8.8; sources differ by 2.8.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

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

OS Command Injection vulnerability in Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the options or filter parameters due to insufficient input sanitization in shell command construction.

CVSS v3
8.8
EG Score
6.0(medium)
EPSS
53.2%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

Rapid7 Extensions

https://extensions.rapid7.com/extension/tcpdump

Vendor Advisories for CVE-2026-8658(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 26× in last 7d / 43× 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. 2026-07-07 07:00 UTCEG score recompute
  2. 2026-07-07 07:00 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 08:38 UTCEG score recompute
  6. 2026-07-06 08:38 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 10:09 UTCEG score recompute
  10. 2026-07-05 10:09 UTCGHSA enrichment
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 11:47 UTCEG score recompute
  14. 2026-07-04 11:47 UTCGHSA enrichment
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-04 06:31 UTCEPSS rescore
  17. 2026-07-03 13:24 UTCEG score recompute
  18. 2026-07-03 13:24 UTCGHSA enrichment
  19. 2026-07-02 15:01 UTCEG score recompute
  20. 2026-07-02 15:00 UTCGHSA enrichment
  21. 2026-07-01 16:38 UTCEG score recompute
  22. 2026-07-01 16:38 UTCGHSA enrichment
  23. 2026-07-01 15:07 UTCEPSS rescore
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-30 18:16 UTCEG score recompute
Show 18 more
  1. 2026-06-30 18:16 UTCGHSA enrichment
  2. 2026-06-29 19:54 UTCEG score recompute
  3. 2026-06-29 19:54 UTCGHSA enrichment
  4. 2026-06-29 19:26 UTCNVD updateCVSS v3 → 8.8 · severity → HIGH
  5. 2026-06-28 21:32 UTCEG score recompute
  6. 2026-06-28 21:32 UTCGHSA enrichment
  7. 2026-06-28 14:07 UTCEPSS rescore
  8. 2026-06-28 04:56 UTCEPSS rescore
  9. 2026-06-27 23:10 UTCEG score recompute
  10. 2026-06-27 23:09 UTCGHSA enrichment
  11. 2026-06-27 03:08 UTCEPSS rescore
  12. 2026-06-27 00:46 UTCEG score recompute
  13. 2026-06-27 00:46 UTCGHSA enrichment
  14. 2026-06-26 02:24 UTCEG score recompute
  15. 2026-06-26 02:24 UTCGHSA enrichment
  16. 2026-06-25 13:50 UTCEPSS rescore
  17. 2026-06-25 04:02 UTCEG score recompute
  18. 2026-06-25 04:01 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-8658?
CVE-2026-8658 is a high vulnerability published on June 25, 2026. OS Command Injection vulnerability in Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the options or filter parameters due to insufficient input sanitization in shell command construction.
When was CVE-2026-8658 disclosed?
CVE-2026-8658 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8658 actively exploited?
CVE-2026-8658 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8658?
CVE-2026-8658 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.0.
How do I remediate CVE-2026-8658?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8658, 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-2026-8658

Explore →

Is Your Infrastructure Affected by CVE-2026-8658?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs