CVE-2015-5988
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 · uneditedThe web management interface on Belkin F9K1102 2 devices with firmware 2.10.17 has a blank password, which allows remote attackers to obtain administrative privileges by leveraging a LAN session.
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 Belkin F9K1102 v2 router with firmware 2.10.17 ships with a blank administrator password on its web management interface, allowing any user with LAN network access to authenticate as admin without providing any credentials.
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< 2.50\(aazi.0\)c0CVSS 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:3.0/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 modelAccess the device's web management interface or check the device label to confirm it is a Zyxel Gs1900 10hp switchAffected if The device is a Zyxel Gs1900 10hp
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Check the installed firmware versionLog into the web management interface and navigate to the firmware or system information section, or use the command-line interface to display the firmware versionAffected if The firmware version is earlier than 2.50(aazi.0)c0
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Verify web interface authentication behaviorAttempt to access the web management interface using default or no credentials. Try accessing the admin login page and attempt authentication with a blank passwordAffected if Authentication succeeds with a blank or empty password
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Confirm administrator account configurationLog into the device and navigate to the administration or user management settings to examine whether the administrator password is set to blank or left emptyAffected if The administrator password is blank or unset
A user is affected if the device is a Zyxel Gs1900 10hp running firmware prior to version 2.50(aazi.0)c0 with a blank administrator password on the web management interface.
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 · scoped2.50
Set a strong administrative password immediately via the device's web interface; if the device is end-of-life and cannot receive firmware updates, replace it with a supported router.
Firmware version 2.50(aazi.0)c0 or later
- 1. Identify the exact model number and current firmware version of the affected device
- 2. Download the latest firmware version 2.50(aazi.0)c0 or later from the vendor's official support page
- 3. Access the device's web management interface
- 4. Navigate to the firmware upgrade or system settings section
- 5. Upload and apply the firmware update
- 6. After reboot, verify the new firmware version is installed
- 7. Change the default administrator password to a strong, unique password
- 8. Verify the new password is required for administrative access
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-5988 — 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-2015-5988 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
- No spam, self-promotion, credentials, or personal data