What is CVE-2026-64877?

CVE-2026-64877 is a high-severity vulnerability in Tenable Security Center, classified under Improper Input Validation. CVSS score: 8.4/10. Published 2026-07-21.

How severe is CVE-2026-64877?

High severity. CVSS v3 base score is 8.4 out of 10.

Improper input validation in Tenable Security Center

CVE-2026-64877

An authenticated non-admin user can exploit a SQL injection flaw in the ticketing REST API to access sensitive data stored in the appliance database.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (24.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Tenable Security_center
Tenable, Inc. Security Center — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2026-64877?: CVE-2026-64877 is a high-severity vulnerability in Tenable Security Center, classified under Improper Input Validation. CVSS score: 8.4/10. Published 2026-07-21.
How severe is CVE-2026-64877?: High severity. CVSS v3 base score is 8.4 out of 10.