CVE-2021-20706

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-03 · updated 2026-06-17
Weakness: CWE-20

Description

Improper input validation vulnerability in the WebManager 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 file upload via network.

Affected products

NEC Corporation CLUSTERPRO X: from 1.0 through 4.3
NEC Clusterpro X Singleserversafe: from 1.0 through 4.3
NEC ExpressCluster: from 1.0 through 4.3
NEC Expresscluster X Singleserversafe: from 1.0 through 4.3

References

https://jpn.nec.com/security-info/secinfo/nv21-015_en.html
https://jpn.nec.com/security-info/secinfo/nv21-015_en.html

Get alerted when CVE-2021-20706 or the next vulnerability affects your stack