CVE-2021-20701 is a critical buffer overflow vulnerability affecting NEC CLUSTERPRO X and EXPRESSCLUSTER X products for Windows, including their SingleServerSafe variants, version 4.3 and earlier. This flaw allows an unauthenticated attacker to achieve remote code execution over the network with low attack complexity. With a CVSS score of 9.8, the potential impact is severe, leading to complete compromise of confidentiality, integrity, and availability. While the vulnerability is critical, there is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.
| 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.