CVE-2026-24437
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 · uneditedShenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) serve sensitive administrative content without appropriate cache-control directives. As a result, browsers may store credential-bearing responses locally, exposing them to subsequent unauthorized access.
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 confidenceThe Tenda W30E V2 router firmware fails to set appropriate cache-control HTTP headers on sensitive administrative pages. This allows web browsers to locally cache credential-bearing responses, which could be accessed by other users sharing the same device or via local filesystem access.
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<= 16.01.0.19\(5037\)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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/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 the device modelAccess the router web interface via its IP address and check the device model name, typically displayed on the login page or in the admin dashboard under System or Status sectionsAffected if Device is a Tenda W30E or W30E V2
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Check the firmware versionIn the router admin interface, navigate to System or Administration > Firmware Upgrade (or similar) to view the current firmware version. Alternatively, check the footer of admin pages or the system status pageAffected if Firmware version is <= 16.01.0.19(5037)
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Inspect HTTP response headers on admin pagesUse a browser developer tool or command-line tool (curl -I http://<router-ip>/admin) to request the login page and administrative endpoints. Examine the HTTP response headers for 'Cache-Control' directivesAffected if Cache-Control header is missing, or is set to values that allow caching (such as 'public', 'max-age', or is absent entirely) on credential-bearing admin pages
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Verify browser cache behaviorLog into the router admin interface, then check your browser's cache folder (or use browser developer tools > Application > Cache) for files from the router's IP address that may contain sensitive administrative contentAffected if Router administrative pages or API responses are found in the local browser cache
A user is affected if they are running Tenda W30E firmware version 16.01.0.19(5037) or earlier AND the administrative web interface returns missing or insufficient Cache-Control headers that permit browser caching of sensitive credential-bearing pages.
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 dataConfigure the embedded web server to include 'Cache-Control: no-store, no-cache, must-revalidate, private' headers on all administrative endpoints, or upgrade to a firmware version that implements proper cache-control directives.
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-24437 — 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-2026-24437 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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