9.8

CVE-2026-8666: rapid7 insightconnect_traceroute OS Command Injection

CVSS: 9.8v3.1CriticalAnalyzed
Published 25-06-2026Last modified 25-06-2026
Open JSON

Vulnerability summary

CVE-2026-8666 is a critical (CVSS 9.8) OS Command Injection vulnerability in rapid7 insightconnect_traceroute. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 67.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 25-06-2026
    Last modifiedVulnerability information updated.

Description

OS Command Injection vulnerability in the traceroute action of Rapid7 InsightConnect Traceroute Plugin on Linux allows remote attackers to execute arbitrary OS commands via the host, port, max_ttl, count, or time_out request parameters due to insufficient input validation when constructing shell commands.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.20%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.20% on 22-09-2026

22-09-202622-10-2026
EPSS score
1.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Rapid72 products

1 vendor · 2 products

References

1 links