CVE-2019-9590

Name: CVE-2019-9590
Creator: NVD / NIST
Published: 2019-03-06T16:29:00.237+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.81%

Last modified Jun 17, 2026

CVE-2019-9590 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.81%

75.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Tengcon	T-920 Plc Firmware	5.5

References

https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/%E8%85%BE%E6%8E%A7/T920_PLC_DOS.mdExploit, Third Party Advisory
https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/%E8%85%BE%E6%8E%A7/T920_PLC_DOS.mdExploit, Third Party Advisory

Timeline

Published: Mar 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9590?

How severe is CVE-2019-9590?

Severity scoring for CVE-2019-9590 is pending analysis. The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9590?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9590?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST