CVE-2026-24789 PUBLISHED

ZLAN Information Technology ZLAN5143D Missing Authentication for Critical Function

Assigner: icscert
Reserved: 29.01.2026 Published: 11.02.2026 Updated: 11.02.2026

An unprotected API endpoint allows an attacker to remotely change the device password without providing authentication.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	ZLAN Information Technology Co.
Product	ZLAN5143D
Versions	Default: unaffected Version v1.600 is affected

Workarounds

ZLAN Information Technology Co. did not respond to CISA's attempts at coordination. Users of ZLAN5143D devices are encouraged to contact ZLAN and keep their systems up to date. https://www.zlmcu.com/en/contatct_us.htm

https://www.zlmcu.com/en/contatct_us.htm

Credits

Shorabh Karir and Deepak Singh of KPMG reported these vulnerabilities to CISA finder

References

Problem Types

CWE-306 CWE