CVE-2022-4499
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 · uneditedTP-Link routers, Archer C5 and WR710N-V1, using the latest software, the strcmp function used for checking credentials in httpd, is susceptible to a side-channel attack. By measuring the response time of the httpd process, an attacker could guess each byte of the username and password.
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 httpd web server on TP-Link Archer C5 and WR710N-V1 routers uses the standard strcmp function for credential verification, which exhibits timing side-channel behavior. Since strcmp returns immediately upon finding the first mismatched character, an attacker can measure HTTP response times to deduce correct credentials byte-by-byte, significantly reducing the complexity of brute-force attacks.
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= 2_160201_us= 1_151022_usCVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 router modelCheck the device label or web interface for the exact model number (Archer C5 or TL-WR710N)Affected if Router is not an Archer C5 or TL-WR710N model
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Check installed firmware versionAccess router web interface (typically 192.168.0.1 or 192.168.1.1), navigate to Status or System settings, and record the firmware version stringAffected if Firmware version is not exactly 2_160201_us (Archer C5) or 1_151022_us (TL-WR710N)
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Verify HTTP service is runningAttempt to access the router web interface via HTTP on the default port (80) from a connected clientAffected if Router HTTP management interface is not accessible
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Check if WAN remote management is enabledLog into router web interface, go to Security or Access Control settings, and check if Remote Management over WAN is enabledAffected if Remote HTTP management is enabled and the router is directly exposed to WAN
Device is affected only if it is an Archer C5 running firmware 2_160201_us or a TL-WR710N running firmware 1_151022_us, and the HTTP management interface is 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 any available firmware updates from TP-Link; if no update exists, disable remote HTTP management access via WAN and consider network segmentation to limit exposure to external attackers.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-4499 — 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-2022-4499 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
- No spam, self-promotion, credentials, or personal data