What is CVE-2026-8658?

CVE-2026-8658 is a medium-severity vulnerability in Linux Linux_kernel, classified under OS Command Injection. CVSS score: 6.0/10. Published 2026-06-25.

How severe is CVE-2026-8658?

Medium severity. CVSS v3 base score is 6.0 out of 10.

RCE in Linux Linux_kernel

CVE-2026-8658

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 comman…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.008 (53.9th percentile) — read the EPSS interpretation.

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.

Affected products

Linux Linux_kernel
Rapid7 Insightconnect_tcpdump
Rapid7 Insightconnect Tcpdump Plugin — versions 0, 2.0.0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@rapid7.com (Product, vendor-advisory)

Frequently asked questions

What is CVE-2026-8658?: CVE-2026-8658 is a medium-severity vulnerability in Linux Linux_kernel, classified under OS Command Injection. CVSS score: 6.0/10. Published 2026-06-25.
How severe is CVE-2026-8658?: Medium severity. CVSS v3 base score is 6.0 out of 10.