RCE in Linux Kernel

CVE-2026-8663

OS Command Injection vulnerability in Rapid7 InsightConnect RPM Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the repo, key, or name parameters due to insufficient input sanitization in shell command construction.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L.

EPSS exploit prediction

EPSS: 0.013 (69.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% 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-2026-8663: held from 0.013 to 0.013.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8663?
CVE-2026-8663 is a medium-severity vulnerability in Linux Kernel, classified under OS Command Injection. CVSS score: 6.0/10. Published 2026-06-25.
How severe is CVE-2026-8663?
Medium severity. CVSS v3 base score is 6.0 out of 10.