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Case File

CVE-2021-20702

CRITICAL · CVSS 9.8 EPSS 2.13% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-03 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2021-20702
Severity
CRITICAL
CVSS
9.8
EPSS
2.13%
Windows

Original NVD Description

Buffer overflow vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier allows attacker to remote code execution via a network.