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Case File

CVE-2021-21696

CRITICAL · CVSS 9.8 EPSS 2.32% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-04 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Jenkins. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-21696
Severity
CRITICAL
CVSS
9.8
EPSS
2.32%
Jenkins

Original NVD Description

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of agent processes to replace the code of a trusted library with a modified variant. This results in unsandboxed code execution in the Jenkins controller process.

Related CVEs

Other vulnerabilities affecting the same vendor(s)