CVE-2026-24789: An unprotected API endpoint allows an attacker to remotely change the device password without providing authentication.

PriorityP271critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.67%

47.3th percentile

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

Affected

1 ranges

Vendor	Product	Version range	Fixed in
zlan_information_technology_co	zlan5143d	—	—

Detection & IOCsextracted from sources · hover to see the quote

→Target device: ZLAN5143D v1.600 — look for unauthenticated HTTP requests to API endpoints that modify device passwords (no Authorization/session header present) ↗
→Network-exploitable with no privileges or user interaction required (CVSS AV:N/AC:L/PR:N/UI:N); alert on unauthenticated inbound requests to ZLAN5143D management interfaces from untrusted networks ↗
→Companion vulnerability CVE-2026-25084 on the same device/version allows auth bypass via direct URL access — correlate both CVEs when triaging ZLAN5143D traffic ↗

·Only ZLAN5143D firmware version v1.600 is confirmed affected; no patched version has been released as the vendor did not respond to CISA coordination ↗
·No known public exploitation has been reported at time of advisory publication; detections should be treated as precautionary ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.