SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-20704

Buffer overflow vulnerability in the compatible API with previous versions 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…

CRITICAL 9.8EPSS 2.14%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Buffer overflow vulnerability in the compatible API with previous versions 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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.14% probability · 81th percentile
CISA KEV
Not listed
Weakness
CWE-120
Affected
nec/clusterpro x · nec/clusterpro x singleserversafe · nec/expresscluster x · nec/expresscluster x singleserversafe
Source
psirt-info@cyber.jp.nec.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.