CVE-2023-39236
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 · uneditedASUS RT-AC86U Traffic Analyzer - Statistic function has insufficient filtering of special character. A remote attacker with regular user privilege can exploit this vulnerability to perform command injection attack to execute arbitrary commands, disrupt system or terminate services.
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 · moderate confidenceThe ASUS RT-AC86U router's Traffic Analyzer statistic function fails to properly filter special characters, allowing an authenticated remote attacker with regular user privileges to inject and execute arbitrary OS commands through the vulnerable input field.
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= 3.0.0.4_386_51529CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Confirm router model is ASUS RT-AC86UCheck the device label on the router or access the web interface and look for the model number in the system information or status pageAffected if The router is not an ASUS RT-AC86U model, then this specific CVE does not apply
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Check installed firmware versionAccess the router web interface, go to Administration > Firmware Upgrade or System section, and note the firmware version displayedAffected if Firmware version is 3.0.0.4_386_51529 (exact match), the router is running the affected version
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Verify Traffic Analyzer feature is enabledAccess the router web interface and locate the Traffic Analyzer or Traffic Monitor settings under the relevant menu (typically under Network Tools or Traffic Manager)Affected if Traffic Analyzer feature is actively enabled and accessible, the command injection vector is present
The environment is affected only if the device is an ASUS RT-AC86U router running firmware version 3.0.0.4_386_51529 AND the Traffic Analyzer feature is enabled, allowing an authenticated user to inject commands through the statistic function input fields.
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 the official ASUS firmware patch when available; until then, disable the Traffic Analyzer feature or restrict administrative access to prevent exploitation by untrusted users.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,152.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39236 — 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-2023-39236 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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