Critical severity9.8NVD Advisory· Published Nov 3, 2021· Updated Jun 17, 2026
CVE-2021-20702
CVE-2021-20702
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.
Affected products
4- Range: <=4.3
- Range: <=4.3
- Range: <=4.3
- Range: 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
Patches
Vulnerability mechanics
References
1News mentions
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