Spa 301 1 Line Ip PhoneHardware / appliance · Cisco
CVE-2014-3312
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 debug console interface on Cisco Small Business SPA300 and SPA500 phones does not properly perform authentication, which allows local users to execute arbitrary debug-shell commands, or read or modify data in memory or a filesystem, via direct access to this interface, aka Bug ID CSCun77435.
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 debug console interface on Cisco Small Business SPA300 and SPA500 phones lacks proper authentication, allowing local attackers with physical or console access to execute arbitrary debug-shell commands and read/modify data in memory or the filesystem.
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
Spa 301 1 Line Ip PhoneHardware / appliance
all versions
Spa 303 3 Line Ip PhoneHardware / appliance
all versions
Spa 501g 8 Line Ip PhoneHardware / appliance
all versions
Spa 502g 1 Line Ip PhoneHardware / appliance
all versions
Spa 504g 4 Line Ip PhoneHardware / appliance
all versions
Spa 508g 8 Line Ip PhoneHardware / appliance
all versions
Spa 509g 12 Line Ip PhoneHardware / appliance
all versions
Spa 512g 1 Line Ip PhoneHardware / appliance
all versionsCVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:L/AC:M/Au:N/C:C/I:C/A:C
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 label on the bottom of the phone or the administrative web interface (Status > Product Info) for the exact model number (SPA301, SPA303, SPA501g, SPA502g, SPA504g, SPA508g, SPA509g, or SPA512g)Affected if The model is one of the listed affected products
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Verify the debug console is accessibleAttempt to access the debug console via the device's serial console port or network-based debug interface if exposed. Check the device's administrative interface for debug or diagnostic features that may be enabled.Affected if The debug console or diagnostic interface is reachable without authentication
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Assess physical access controlsExamine the physical location of the device. Determine whether the serial console port or debug port is exposed and whether unauthorized persons could gain physical access to connect to it.Affected if The device is in an unsecured location where individuals can access console/debug ports
You are affected if you are using any of the listed Cisco SPA phone models and the debug console is accessible to unauthorized local users.
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 the latest Cisco firmware update for SPA300/SPA500 series phones, and if the debug console cannot be updated, physically secure the devices to prevent unauthorized local access.
Fix this in Spa 301 1 Line Ip Phone
Scoped from the published advisory
- Consultation3.0 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 $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-3312 — 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-2014-3312 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
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