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Case File

CVE-2021-21307

HIGH · CVSS 8.6 EPSS 89.19% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-11 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.6. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 89.2% probability of exploitation in the next 30 days. It may be remotely exploitable.

Public Exploit Signal

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

Detected Signals
exploit
External Security References

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

CVE
CVE-2021-21307
Severity
HIGH
CVSS
8.6
EPSS
89.19%
Java

Original NVD Description

Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.