TI-2019-07008 Aliases CVE-2019-9590 GHSA-fxf8-rfwg-hhhv

An issue was discovered on TENGCONTROL T-920 PLC v5.5 devices.

LOW 36Published 2019-03-06 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01811 78th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tengcon:t-920_plc_firmware:5.5:::::::*	5.5	Vulnerable	Tengcon
cpe:2.3:h:tengcon:t-920_plc:-:::::::*	not specified by NVD	Running on	Tengcon

cpe:2.3:o:tengcon:t-920_plc_firmware:5.5:*:*:*:*:*:*:* Versions 5.5 Vulnerable ·Tengcon
cpe:2.3:h:tengcon:t-920_plc:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tengcon

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-9590
2026-10-03 Alias added: GHSA-fxf8-rfwg-hhhv

References

Exploit 1

https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/%E8%85%BE%E6%8E%A7/T920_PLC_DOS.md

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences