CVE-2025-9934
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 vulnerability was found in TOTOLINK X5000R 9.1.0cu.2415_B20250515. This affects the function sub_410C34 of the file /cgi-bin/cstecgi.cgi. Performing manipulation of the argument pid results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used.
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 confidenceCommand injection vulnerability in TOTOLINK X5000R router firmware 9.1.0cu.2415_B20250515 allows remote attackers to execute arbitrary OS commands via the 'pid' parameter passed to the /cgi-bin/cstecgi.cgi CGI binary's sub_410C34 function. The lack of input sanitization on the pid argument enables direct shell command injection.
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= 9.1.0cu.2415_b20250515CVSS 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 device modelAccess router web interface or check device label to confirm it is a TOTOLINK X5000R routerAffected if Device is not a TOTOLINK X5000R model
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Check firmware versionLog into router admin panel and navigate to System Status or Firmware Upgrade page to view installed firmware version, or use command 'cat /proc/version' via telnet/ssh if availableAffected if Firmware version is 9.1.0cu.2415_B20250515
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Verify CGI endpoint is accessibleAttempt to access http://[router-ip]/cgi-bin/cstecgi.cgi from a browser; a response (even an error) indicates the CGI interface is activeAffected if CGI endpoint responds (device is reachable on network)
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Confirm remote web management is enabledCheck router settings under Administration or Access Control to see if HTTP/HTTPS management is enabled for WAN/remote access, or attempt to access the router login page from an external networkAffected if Remote web management (WAN access) is enabled and the router is directly exposed to untrusted networks
Device is affected only if it is a TOTOLINK X5000R running firmware version 9.1.0cu.2415_B20250515 with the CGI interface accessible and remote management enabled for external attackers to reach it.
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 patch when available; until then, disable remote web management access or place device behind a firewall to block external access to the management interface.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-9934 — 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-2025-9934 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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