CVE-2025-4368
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, which was classified as critical, was found in Tenda AC8 16.03.34.06. Affected is the function formGetRouterStatus of the file /goform/MtuSetMacWan. The manipulation of the argument shareSpeed leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may 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 confidenceA buffer overflow vulnerability exists in Tenda AC8 routers (firmware 16.03.34.06) within the formGetRouterStatus function in /goform/MtuSetMacWan. The shareSpeed parameter is not properly validated, allowing an attacker to overflow a buffer via crafted input. This can be exploited remotely, likely without authentication given the CVSS 9.8 rating.
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= 16.03.34.06CVSS 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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Confirm Tenda AC8 router modelLog into the router web interface and check the device model/型号 information, typically found under System Settings or Status pages. Alternatively, check the device label or packaging.Affected if Device model is NOT Tenda AC8 - different models are not affected by this specific CVE
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Check firmware version 16.03.34.06In the router web interface, navigate to System Settings > Firmware Upgrade or similar, or check under Status/System Info for the firmware version. The exact path varies by router interface.Affected if Firmware version is exactly 16.03.34.06 - this is the only version listed as affected in the advisory
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Verify web management interface is accessibleAttempt to access the router's web interface on the default IP (typically 192.168.0.1 or 192.168.1.1) via HTTP (port 80) or HTTPS (port 443). This is the attack surface for remote exploitation.Affected if The web management interface is exposed and accessible from the network where an attacker could send requests to /goform/MtuSetMacWan
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Check for remote access configurationUnder the router's Advanced Settings or Security settings, verify if Remote Management/Remote Access features are enabled, which would allow external attackers to reach the vulnerable endpoint.Affected if Remote management is enabled, especially if WAN access is permitted - increasing exposure to remote attackers
A Tenda AC8 router running firmware version 16.03.34.06 with its web management interface accessible (especially from WAN) is vulnerable to this buffer overflow via the /goform/MtuSetMacWan endpoint.
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 latest firmware update from Tenda for the AC8 model. If no patch is available, restrict external access to the router's web management interface (port 80/443) to prevent remote exploitation.
- Consultation2.0 h
- Implementation2.0 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-2025-4368 — 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-2025-4368 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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