RCE in Linux Kernel

CVE-2026-8660

OS Command Injection vulnerability in the ping action of Rapid7 InsightConnect Ping Plugin on Linux allows remote attackers to execute arbitrary OS commands via the host parameter due to insufficient input validation when constructing shell commands.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.012 (66.9th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-8660: held from 0.012 to 0.012.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8660?
CVE-2026-8660 is a high-severity vulnerability in Linux Kernel, classified under OS Command Injection. CVSS score: 7.7/10. Published 2026-06-25.
How severe is CVE-2026-8660?
High severity. CVSS v3 base score is 7.7 out of 10.