CVE record · CVE-2026-74233

Zbtlink MQWrt infosrvd Command Injection

CVSS 9.3 CriticalCriticalEPSS 0.034 · 88th percentile

Critical, because:

CVSS score 9.3: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 27 Aug 2026, 10:40 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Zbtlink	WE1326	affected 19.1101 custom Other versions: unknown
Zbtlink	WE2426-C	affected 19.1112 custom Other versions: unknown
Zbtlink	WE357	affected 19.1101 custom Other versions: unknown
Zbtlink	WE5926	affected 19.1101 custom Other versions: unknown
Zbtlink	WE5926-EC_QP	affected 20.0516 custom Other versions: unknown
Zbtlink	WE5926-WD	affected 19.1101 custom Other versions: unknown
Zbtlink	WE826-Q	affected 19.1101 custom Other versions: unknown
Zbtlink	WE826-T2	affected 19.1101 custom Other versions: unknown
Zbtlink	WE826-WD	affected 19.1101 custom Other versions: unknown
Zbtlink	WF3526-P	affected 19.051 custom Other versions: unknown
Zbtlink	WG108	affected 19.1101 custom Other versions: unknown
Zbtlink	WG3526	affected 19.1101 custom Other versions: unknown
Unknown	CTN720-W1	affected 19.1101 custom Other versions: unknown
Unknown	LF-1541	affected 19.1101 custom Other versions: unknown
Unknown	MT7620N	affected 19.1101 custom Other versions: unknown
Unknown	WRC1	affected 20.0622 custom Other versions: unknown

Identifiers: CVE-2026-74233
CNA: VulnCheck
Weakness (CWE): CWE-78 · CWE-321
Tags: Zbtlink WE1326
Zbtlink WE2426-C
Zbtlink WE357
Zbtlink WE5926
Zbtlink WE5926-EC_QP
Zbtlink WE5926-WD
Zbtlink WE826-Q
Zbtlink WE826-T2
Command injection
Hard-coded credentials
Published: 27 Aug 2026
Updated: 27 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.3	Critical	4.0	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	CNA (VulnCheck)Used for this record
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.034, the 88th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 27 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

www.vulncheck.com/advisories/zbtlink-mqwrt-infosrvd-command-injection third-party-advisory
vulncheck.com/blog/zbt-darklantern-speakingstone technical-descriptionexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.