CVE-2019-9590 describes a denial-of-service vulnerability affecting TENGCONTROL T-920 PLC devices running firmware version 5.5. An unauthenticated remote attacker can trigger a persistent failure mode by sending a specific sequence of Modbus/TCP requests to port 502. This vulnerability is rated as high severity (CVSS 7.5), indicating a low attack complexity and no user interaction required, leading to a complete loss of availability for the affected PLC. While the vulnerability is significant, there is currently no evidence of active exploitation, publicly available exploit code, or notable community discussion surrounding it.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.5CPE matchmatch criteria | cpe:2.3:o:tengcon:t-920_plc_firmware:5.5:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/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.