CVE-2021-20702 is a critical buffer overflow vulnerability affecting NEC CLUSTERPRO X and EXPRESSCLUSTER X products, including their SingleServerSafe variants, all versions 4.3 and earlier. This flaw allows for unauthenticated remote code execution over the network, posing a severe risk to affected systems. With a CVSS score of 9.8, it carries the highest severity due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the inherent danger of remote code execution necessitates immediate patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0, <= 4.3CPE matchmatch criteria | cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:* | ||
>= 1.0, <= 4.3CPE matchmatch criteria | cpe:2.3:a:nec:clusterpro_x_singleserversafe:*:*:*:*:*:windows:*:* | ||
>= 1.0, <= 4.3CPE matchmatch criteria | cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:* | ||
>= 1.0, <= 4.3CPE matchmatch criteria | cpe:2.3:a:nec:expresscluster_x_singleserversafe:*:*:*:*:*:windows:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.