CVE-2023-25212
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 · uneditedTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the fromSetWirelessRepeat function. This vulnerability allows attackers to cause a Denial of Service (DoS) or execute arbitrary code via a crafted payload.
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 confidenceStack buffer overflow in the fromSetWirelessRepeat function of Tenda AC5 router firmware US_AC5V1.0RTL_V15.03.06.28 allows remote attackers to overwrite stack memory via oversized payload, leading to denial of service or arbitrary code execution with high probability due to the critical CVSS score.
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= 15.03.06.28CVSS 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 device modelCheck the router label or access the web admin interface to confirm the model is Tenda AC5Affected if Device is a Tenda AC5 router
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Check the firmware versionAccess the router web admin interface (typically at 192.168.0.1), navigate to System Settings or Administration section, and look for firmware version information. Alternatively, use the command 'cat /proc/version' or check via telnet/SSH if enabled.Affected if Firmware version is exactly 15.03.06.28
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Verify if the fromSetWirelessRepeat function is accessibleCheck if the router web interface has a Wireless Repeat or WDS configuration page accessible at /goform/fromSetWirelessRepeat or similar. This is typically found under Wireless Settings or Advanced Wireless settings.Affected if Wireless repeat/WDS feature is enabled and accessible through the web interface
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Check for exposed administrative interfaceDetermine if the router web administration interface (port 80/443) is exposed to the internet or an untrusted network by reviewing port forwarding rules, WAN access settings, or performing an external port scan.Affected if The administrative web interface is accessible from WAN or untrusted networks
You are affected if you have a Tenda AC5 router running firmware version 15.03.06.28 with the wireless repeat feature enabled and the administrative interface is accessible to the attacker.
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 firmware patch if available; otherwise, disable wireless repeat functionality and restrict administrative interface access to trusted networks only.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-25212 — 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-2023-25212 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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