CVE-2019-5636 describes a denial-of-service vulnerability in Beckhoff TwinCAT Runtime, affecting versions 2.2304 and prior, and 3.1.4204.0 and prior. A malformed UDP packet can shut down the ADS Discovery Service, though the TwinCAT devices continue normal operation. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and high availability impact, but no confidentiality or integrity impact. There is no evidence of active exploitation, nor publicly available exploit code, with minimal community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.0CPE matchmatch criteria | cpe:2.3:a:beckhoff:twincat:2.0:build2304:*:*:*:*:*:* | ||
3.1CPE matchmatch criteria | cpe:2.3:a:beckhoff:twincat:3.1:build4024.0:*:*:*:*:*:* |
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:L
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.