iOSOperating system · Cisco
CVE-2012-1314
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 WAAS Express feature in Cisco IOS 15.1 and 15.2 allows remote attackers to cause a denial of service (memory consumption or device reload) via crafted transit traffic, aka Bug ID CSCtt45381.
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 confidenceThe WAAS Express feature in Cisco IOS 15.1 and 15.2 contains a vulnerability where specially crafted transit traffic can cause memory exhaustion or device reload, resulting in denial of service. This is a remote, unauthenticated attack vector affecting the WAAS Express component.
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
iOSOperating system
= 15.1= 15.2CVSS 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:N/C:N/I:N/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 Cisco iOS versionExecute 'show version' and locate the version number in the outputAffected if The version displayed is 15.1 or 15.2 (specifically 15.1(x) or 15.2(x))
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Verify if WAAS Express is enabledCheck the current configuration with 'show running-config' and search for 'waas express' or 'waas' related configuration commandsAffected if WAAS Express configuration appears in the running configuration, indicating the feature is active
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Confirm WAAS Express operational statusUse 'show waas express status' or similar WAAS-specific show command to verify the feature is operationalAffected if The command returns status showing WAAS Express is initialized or active on the device
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Assess transit traffic exposureReview interface configurations and traffic patterns to determine if the device processes transit (pass-through) trafficAffected if The device processes untrusted transit traffic while running vulnerable iOS with WAAS Express enabled
Device is affected if running Cisco iOS version 15.1 or 15.2 with WAAS Express feature enabled and configured to process transit traffic.
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 dataUpgrade Cisco IOS to a version beyond 15.2 that includes the fix for CSCtt45381. If immediate patching is not feasible, consider disabling WAAS Express or implementing network segmentation to limit exposure to untrusted transit traffic.
Fix this in iOS
Scoped from the published advisory
- Consultation4.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-1314 — 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-2012-1314 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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