CVE-2021-27500 is a denial-of-service vulnerability affecting EIPStackGroup OpENer EtherNet/IP commits and versions prior to February 10, 2021. An unauthenticated attacker can exploit this by sending a specially crafted packet over the network, leading to a high-severity impact on system availability. While no public exploit code or active exploitation has been observed, the vulnerability has garnered some community discussion and media coverage. Its EPSS score suggests a low probability of exploitation, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.3CPE matchmatch criteria | cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.