CVE-2020-27263 is a critical heap-based buffer overflow vulnerability affecting multiple industrial control system (ICS) products, including KEPServerEX, ThingWorx Kepware Server, and Rockwell Automation KEPServer Enterprise. An unauthenticated attacker can exploit this by sending a specially crafted OPC UA message, leading to server crashes and potential data leakage. With a CVSS score of 9.1, it presents a high risk due to its network-based attack vector, low attack complexity, and severe impact on availability and confidentiality. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the vulnerability remains a significant concern for affected organizations.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
7.66CPE matchmatch criteria | cpe:2.3:a:ge:industrial_gateway_server:7.66:*:*:*:*:*:*:* | ||
7.68.804CPE matchmatch criteria | cpe:2.3:a:ge:industrial_gateway_server:7.68.804:*:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:a:ptc:kepware_kepserverex:6.0:*:*:*:*:*:*:* | ||
6.9CPE matchmatch criteria | cpe:2.3:a:ptc:kepware_kepserverex:6.9:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:ptc:opc-aggregator:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.