What is CVE-2026-64878?

CVE-2026-64878 is a critical-severity vulnerability in Tenable Security Center, classified under OS Command Injection. CVSS score: 9.9/10. Published 2026-07-21.

How severe is CVE-2026-64878?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Tenable Security Center

CVE-2026-64878

Unvalidated input in asset filter parameters allows shell metacharacters to escape command argument handling, resulting in remote code execution as a low-privileged OS user via the Analysis REST endpoint.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.008 (54.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Tenable Security_center
Tenable, Inc. Security Center — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

vulnreport@tenable.com (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2026-64878?: CVE-2026-64878 is a critical-severity vulnerability in Tenable Security Center, classified under OS Command Injection. CVSS score: 9.9/10. Published 2026-07-21.
How severe is CVE-2026-64878?: Critical severity. CVSS v3 base score is 9.9 out of 10.