CVE-2023-39669
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 · uneditedD-Link DIR-880 A1_FW107WWb08 was discovered to contain a NULL pointer dereference in the function FUN_00010824.
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 NULL pointer dereference vulnerability exists in D-Link DIR-880 router firmware version A1_FW107WWb08, specifically in function FUN_00010824. This type of vulnerability occurs when the code attempts to dereference a NULL pointer, typically causing a denial of service condition or potentially enabling further exploitation depending on memory layout and crash handling.
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= 107wwb08CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 router modelAccess the router's web management interface or check the physical device label to verify the model is D-Link DIR-880Affected if The device is not a D-Link DIR-880 model
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Identify firmware versionCheck the installed firmware version through the router's web admin panel (typically under Status, Maintenance, or System settings), or use the router's CLI if accessible, or check the firmware file if you flashed the device manuallyAffected if The firmware version shown is A1_FW107WWb08 or 107wwb08
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Verify firmware branchConfirm the firmware is the A1 hardware revision variant by checking the version string or model number displayed in the router's status pageAffected if Running A1 hardware revision with firmware version 107wwb08
You are affected if your D-Link DIR-880 router is running firmware version A1_FW107WWb08 (107wwb08) on the A1 hardware revision.
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.
dbcve · scopedUpdate to a newer firmware version if available from D-Link support. If no patch exists, restrict network access to the device's management interface and monitor for unauthorized access attempts.
- This CVE references a D-Link DIR-880L A1 firmware version 107wwb08 which is already at end-of-life status.
- D-Link has not released a patch or firmware update for this specific vulnerability.
- No fixed version information is available from the provided references.
- Consider replacing the affected D-Link DIR-880L device with a currently supported model that receives security updates.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39669 — 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-2023-39669 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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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.
- 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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