CVE-2022-25133
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA command injection vulnerability in the function isAssocPriDevice of TOTOLINK Technology router T6 V3_Firmware T6_V3_V4.1.5cu.748_B20211015 allows attackers to execute arbitrary commands via a crafted MQTT packet.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA command injection vulnerability exists in the isAssocPriDevice function of TOTOLINK T6 router firmware. Attackers can achieve arbitrary command execution by sending a crafted MQTT packet to the affected device, exploiting insufficient input validation in the MQTT message handling routine.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= v4.1.5cu.748_b20211015CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device modelAccess the router's web interface or check the device label to confirm it is a TOTOLINK T6 modelAffected if The device is not a TOTOLINK T6 router, then this CVE does not apply
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Check the installed firmware versionLog into the router's web management interface and navigate to the System or Status page to view the firmware version, or use the command line if accessibleAffected if The firmware version is v4.1.5cu.748_b20211015, the device is running the affected version
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Verify if MQTT service is enabledCheck the router's web interface under Services or Network settings for an MQTT configuration option, or examine the device's listening ports using 'netstat -an' to identify if port 1883 (default MQTT) is openAffected if MQTT service is enabled and accessible on the device, making it potentially exploitable
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Check network exposure of management interfaceDetermine if the router's web interface and MQTT service are reachable from untrusted networks by reviewing firewall rules or attempting access from an external IPAffected if The management interface or MQTT service is exposed to untrusted networks, the vulnerability can be exploited remotely
The device is affected if it is a TOTOLINK T6 router running firmware version v4.1.5cu.748_b20211015 with MQTT service enabled and accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor-supplied firmware update when available; until then, restrict network access to the device's management interface and disable or firewall the MQTT service to prevent unauthenticated packet injection.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2022-25133 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-25133 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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