CVE-2021-20076

HIGH

Tenable.sc < 5.17.0 - Insecure Deserialization

Title source: rule

Description

Tenable.sc and Tenable.sc Core versions 5.13.0 through 5.17.0 were found to contain a vulnerability that could allow an authenticated, unprivileged user to perform Remote Code Execution (RCE) on the Tenable.sc server via Hypertext Preprocessor unserialization.

References (1)

[Vendor Advisory] https://www.tenable.com/security/tns-2021-03

Scores

CVSS v3 8.8

EPSS 0.0338

EPSS Percentile 87.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-502

Status published

Affected Products (1)

tenable/tenable.sc < 5.17.0

Timeline

Published Mar 03, 2021

Tracked Since Feb 18, 2026