CVE-2021-40873 is a denial-of-service vulnerability affecting Softing Industrial Automation OPC UA C++ SDK before version 5.66 and uaToolkit Embedded before version 1.40. Remote attackers can exploit a double-free error by sending crafted messages to a client or server, causing the server process to crash and require a restart. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.18CPE matchmatch criteria | cpe:2.3:a:softing:datafeed_opc_suite:*:*:*:*:*:*:*:* | ||
<= 2.31CPE matchmatch criteria | cpe:2.3:a:softing:edgeconnector:*:*:*:*:*:*:*:* | ||
< 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.