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Case File

CVE-2021-34371

CRITICAL · CVSS 9.8 EPSS 13.39% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-05 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 13.4% 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 remote code execution code execution
External Security References

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

CVE
CVE-2021-34371
Severity
CRITICAL
CVSS
9.8
EPSS
13.39%
Java

Original NVD Description

Neo4j through 3.4.18 (with the shell server enabled) exposes an RMI service that arbitrarily deserializes Java objects, e.g., through setSessionVariable. An attacker can abuse this for remote code execution because there are dependencies with exploitable gadget chains.

Related CVEs

Other vulnerabilities affecting the same vendor(s)