CVE-2021-40871 is a denial-of-service vulnerability affecting Softing Industrial Automation OPC UA C++ SDK versions prior to 5.66, impacting products like datafeed_opc_suite, OPC, secure_integration_server, and th_scope. Remote attackers can crash vulnerable OPC/UA client processes by sending crafted messages, leading to service disruption. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.18CPE matchmatch criteria | cpe:2.3:a:softing:datafeed_opc_suite:*:*:*:*:*:*:*:* | ||
< 5.66CPE matchmatch criteria | cpe:2.3:a:softing:opc:*:*:*:*:*:*:*:* | ||
<= 1.22CPE matchmatch criteria | cpe:2.3:a:softing:secure_integration_server:*:*:*:*:*:*:*:* | ||
>= 3.5CPE matchmatch criteria | cpe:2.3:a:softing:th_scope:*:*:*:*:*:*:*:* |
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.
No media coverage found for this CVE.
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.