CVE-2026-7153
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 security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setMiniuiHomeInfoShow of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument sys_info results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
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 confidenceOS command injection vulnerability in Totolink A8000RU router's CGI handler. The setMiniuiHomeInfoShow function in /cgi-bin/cstecgi.cgi fails to sanitize the sys_info parameter, allowing remote attackers to inject and execute arbitrary operating system commands. Exploitable remotely without authentication due to the high CVSS score.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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 modelCheck the router label or access the web interface and look for the model number in the status or system information pageAffected if The device is a Totolink A8000RU router
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Verify the CGI endpoint existsAttempt to access http://<router_ip>/cgi-bin/cstecgi.cgi via HTTP request and check for a valid response or 400/500 errorAffected if The endpoint responds (indicating the CGI handler is present)
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Confirm network exposureCheck if the router's web interface (port 80/443) is accessible from WAN/internet by testing external IP connectivity or checking port forwarding/firewall rulesAffected if The web interface is exposed to untrusted networks (WAN)
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Look for indicators of compromiseCheck router configuration for unexpected changes, new admin accounts, or suspicious scheduled tasks. Review system logs in /var/log/ for unusual commands or CGI requestsAffected if Unexpected configuration changes, unknown accounts, or suspicious command entries in logs
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Check for existing exploitsReview network traffic logs for requests to /cgi-bin/cstecgi.cgi with unusual sys_info parameter values containing shell metacharacters like ; | ` $ ( )Affected if Such requests are found in logs or network captures
The environment is affected if the device is a Totolink A8000RU with its web interface exposed to untrusted networks, particularly if the CGI endpoint is accessible or signs of exploitation are observed.
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 dataImmediately restrict access to the router's web interface from untrusted networks (disable WAN management, place behind NAT/firewall). Monitor for indicators of compromise since public exploit exists. Contact vendor for firmware updates.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-7153 — 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-2026-7153 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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