Ac5 FirmwareOperating system · Tenda

CVE-2023-25215

CRITICAL · 9.8 CVSS v3.1 Published 2023-04-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the saveParentControlInfo 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 confidence

Tenda AC5 router firmware US_AC5V1.0RTL_V15.03.06.28 contains a stack overflow vulnerability in the saveParentControlInfo function. Attackers can send a crafted payload (likely via HTTP request to the web management interface) to trigger the overflow, leading to denial of service or arbitrary code execution with critical severity (CVSS 9.8).

MitigationApply vendor-supplied firmware patch when available; if no patch exists, consider disabling the parental control feature or replacing the device. Restrict access to the router's web management interface to trusted networks only as an interim measure.

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
Ac5 FirmwareOperating system
Affected:= 15.03.06.28

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Access the router web management interface or check the device label/marketing to confirm it is a Tenda AC5 model router
    Affected if Device is not a Tenda AC5, then not affected
  2. Check firmware version
    Log into the router web interface (typically 192.168.0.1) and navigate to System Settings > Firmware Upgrade, or check via telnet/SSH if enabled. Look for version information showing US_AC5V1.0RTL_V15.03.06.28
    Affected if Firmware version is exactly 15.03.06.28, then system is affected
  3. Verify web management interface accessibility
    Confirm the router HTTP/HTTPS web interface is reachable on the local network or remotely if port forwarding is configured
    Affected if Web interface is accessible to untrusted users, attack surface exists
  4. Confirm parental control feature exists
    In the router web interface, check if there is a Parental Control or Parent Control settings section under the relevant menu
    Affected if Parental control feature is present and accessible, the vulnerable saveParentControlInfo function is exposed

The system is affected only if it is a Tenda AC5 router running firmware version 15.03.06.28 with the web management interface accessible and parental control feature available.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-supplied firmware patch when available; if no patch exists, consider disabling the parental control feature or replacing the device. Restrict access to the router's web management interface to trusted networks only as an interim measure.

Fix this in Ac5 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2023-25215 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-25215 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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