CVE-2024-8076
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 AC1200 T8 4.1.5cu.862_B20230228 and classified as critical. Affected by this issue is the function setDiagnosisCfg. The manipulation leads to buffer overflow. The attack may be launched remotely. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceA buffer overflow vulnerability exists in the setDiagnosisCfg function of TOTOLINK AC1200 T8 router firmware v4.1.5cu.862_B20230228. The function fails to properly validate input bounds before copying data into a fixed-size buffer, allowing an attacker to overwrite adjacent memory by sending specially crafted HTTP requests to the web interface.
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= 4.1.5cu.862_b20230228CVSS 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 router modelCheck the device label or login to the router web interface and look for the model name (T8 from TOTOLINK AC1200 series)Affected if The device is not a TOTOLINK T8 router, then it is not affected by this CVE
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Determine the firmware versionLogin to the router web interface and navigate to System Status or Firmware Upgrade page to find the installed firmware version, or check via CLI if availableAffected if The firmware version is NOT exactly 4.1.5cu.862_B20230228, then it is not affected by this CVE
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Verify web interface accessibilityAttempt to access the router web interface via HTTP/HTTPS from the network where the device is deployedAffected if The web interface is not accessible from your network segment, the attack surface is reduced but the vulnerability still exists in the firmware if versions match
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Check if remote management is enabledIn the router web interface, look for Remote Management, Access Control, or Administration settings to see if external access to the web interface is permittedAffected if Remote management is enabled and the web interface is reachable from untrusted networks, the device is at higher risk of exploitation
Your device is affected if it is a TOTOLINK T8 router running firmware version exactly 4.1.5cu.862_B20230228, regardless of whether the web interface is currently 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 dataSince the vendor did not respond and no patch exists, immediate mitigations include: disabling remote administration access if not required, placing the device behind a properly configured firewall, and restricting network access to the device's management interface. Consider replacing the device with a model receiving active security support.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-8076 — 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-2024-8076 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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