CVE-2019-9590
CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue was discovered on TENGCONTROL T-920 PLC v5.5 devices. It allows remote attackers to cause a denial of service (persistent failure mode) by sending a series of \\x19\\xb2\\x00\\x00\\x00\\x06\\x43\\x01\\x00\\xac\\xff\\x00 (aka UID 0x43) requests to TCP port 502.
Technical details
- Published
- 2019-03-06
Frequently asked questions
What is CVE-2019-9590?
An issue was discovered on TENGCONTROL T-920 PLC v5.5 devices. It allows remote attackers to cause a denial of service (persistent failure mode) by sending a series of \\x19\\xb2\\x00\\x00\\x00\\x06\\x43\\x01\\x00\\xac\\xff\\x00 (aka UID 0x43) requests to TCP port 502.
Is CVE-2019-9590 actively exploited?
Active exploitation of CVE-2019-9590 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-9590?
CVE-2019-9590 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-9590 affecting your environment?
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