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2 vulnerabilities found for WE826-WD by Zbtlink

CVE-2026-74233 (GCVE-0-2026-74233)

Vulnerability from nvd – Published: 2026-08-27 10:40 – Updated: 2026-08-27 13:41

Title

Zbtlink MQWrt infosrvd Command Injection

Summary

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.

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 13:41 UTC

CWE

CWE-321 - Use of Hard-coded Cryptographic Key
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
http://vulncheck.com/blog/zbt-darklantern-speakingstone	technical-descriptionexploit
https://www.vulncheck.com/advisories/zbtlink-mqwr…	third-party-advisory

Impacted products

16 products

Vendor	Product	Version
Zbtlink	WE1326	Affected: 19.1101 (custom)
Zbtlink	WE2426-C	Affected: 19.1112 (custom)
Zbtlink	WE357	Affected: 19.1101 (custom)
Zbtlink	WE5926	Affected: 19.1101 (custom)
Zbtlink	WE5926-EC_QP	Affected: 20.0516 (custom)
Zbtlink	WE5926-WD	Affected: 19.1101 (custom)
Zbtlink	WE826-Q	Affected: 19.1101 (custom)
Zbtlink	WE826-T2	Affected: 19.1101 (custom)
Zbtlink	WE826-WD	Affected: 19.1101 (custom)
Zbtlink	WF3526-P	Affected: 19.051 (custom)
Zbtlink	WG108	Affected: 19.1101 (custom)
Zbtlink	WG3526	Affected: 19.1101 (custom)
Unknown	CTN720-W1	Affected: 19.1101 (custom)
Unknown	LF-1541	Affected: 19.1101 (custom)
Unknown	MT7620N	Affected: 19.1101 (custom)
Unknown	WRC1	Affected: 20.0622 (custom)

Date Public

2026-08-27 00:00

Credits

Jacob Baines of VulnCheck

Show details on NVD website

JSON

To clipboard

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