Unified Communications Domain ManagerApplication · Cisco
CVE-2014-8020
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 · uneditedCisco Unified Communication Domain Manager Platform Software allows remote attackers to cause a denial of service (CPU consumption, and performance degradation or service outage) via a flood of malformed TCP packets and UDP packets, aka Bug ID CSCup25276.
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 vulnerability allows remote attackers to cause a denial of service by sending a flood of malformed TCP and UDP packets to the Cisco Unified Communication Domain Manager Platform. These malformed packets consume CPU resources, leading to performance degradation or complete service outage.
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
Unified Communications Domain ManagerApplication
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
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 product identityIdentify if the system is running Cisco Unified Communications Domain Manager. Use commands such as 'show version' or check system documentation to verify the installed product name.Affected if The product is Cisco Unified Communications Domain Manager (any version)
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Verify affected version rangeCheck the installed version of Cisco Unified Communications Domain Manager using 'show version' or the administrative web interface. Compare against the affected version range.Affected if Any version of Cisco Unified Communications Domain Manager is installed (all versions are affected)
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Monitor CPU utilizationObserve system CPU usage via 'show processes cpu history' or the system monitoring dashboard. Look for unusually high CPU consumption that correlates with network traffic.Affected if CPU utilization spikes during periods of incoming TCP/UDP traffic
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Inspect network traffic for malformed packetsCapture and analyze incoming network packets using packet capture tools (tcpdump, Wireshark) at the network interface. Look for malformed TCP and UDP packets entering the environment.Affected if Malformed TCP or UDP packets are observed arriving at the Cisco Unified Communications Domain Manager interface
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Check for service degradationReview system logs and performance metrics for signs of service degradation, slow response times, or connectivity issues that coincide with heavy network traffic.Affected if Service performance degrades during periods of incoming network traffic
The environment is affected if Cisco Unified Communications Domain Manager is running, as all versions of this product are vulnerable to the denial-of-service condition triggered by malformed TCP/UDP packets.
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 vendor patch from Cisco (Bug ID CSCup25276) when available, and implement network-level filtering or rate limiting at perimeter devices as a compensating control until the patch can be applied.
Fix this in Unified Communications Domain Manager
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-8020 — 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-2014-8020 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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