CVE-2026-74233
Zbtlink WE1326, WE357, WE5926, WE5926-WD, WE826-Q, WE826-T2, WE826-WD, WG108, and WG3526 firmware 19.1101, Zbtlink WE2426-C firmware 19.1112, Zbtlink WE5926-EC_QP firmware 20.0516, Zbtlink WF3526-P firmware 19.051, CTN720-W1, LF-1541, and MT7620N firmware 19.1101, and WRC1 firmware 20.0622 contain an unauthenticated command injection in the infosrvd service (UDP/9992). A remote unauthenticated attacker can send a crafted UDP packet to execute arbitrary commands as root. The service's authentication uses a hardcoded salt and an all-zero wildcard MAC bypass, rendering it ineffective.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.8
- 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
- EPSS probability
- 2.63%
- CWE
- CWE-321, CWE-78
- Published
- 2026-08-27
- Last modified
- 2026-08-27
Affected products
- Zbtlink WE1326
- Zbtlink WE2426-C
- Zbtlink WE357
- Zbtlink WE5926
- Zbtlink WE5926-EC_QP
- Zbtlink WE5926-WD
- Zbtlink WE826-Q
- Zbtlink WE826-T2
Weakness type
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