Callmanager ExpressHardware / appliance · Cisco
CVE-2006-4032
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 · uneditedUnspecified vulnerability in Cisco IOS CallManager Express (CME) allows remote attackers to gain sensitive information (user names) from the Session Initiation Protocol (SIP) user directory via certain SIP messages, aka bug CSCse92417.
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 confidenceCisco IOS CallManager Express (CME) contains an information disclosure vulnerability allowing remote attackers to retrieve user names from the SIP user directory via specially crafted SIP messages. The vulnerability is tied to improper handling of certain SIP requests that expose directory information.
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
Callmanager ExpressHardware / appliance
= 3.0CVSS 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
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 if Cisco CallManager Express is runningOn the IOS device, run 'show telephony-service' or 'show ephone' to check if CME is configuredAffected if CME is not present on the device, the system is not affected by this CVE
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Check the exact IOS version runningRun 'show version' and look for the IOS version number in the outputAffected if The IOS version is exactly 3.0 (or the version string indicates CME version 3.0); other versions are not affected by this specific CVE
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Verify if SIP is enabled in the CME configurationRun 'show running-config | include sip' or check the telephony-service configuration for SIP-related commands such as 'sip-server' or 'allow connections sip'Affected if SIP is not configured or enabled in CME, the directory disclosure vulnerability does not apply
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Check SIP server configuration exposureRun 'show sip-ua service' or 'show sip server' to see if a SIP user directory or SIP registrar is activeAffected if A SIP server or registrar is configured and accessible, the directory could be queried by remote attackers sending specially crafted SIP requests
The system is affected only if it runs Cisco CallManager Express version 3.0 with SIP functionality enabled and exposed, allowing remote attackers to query the SIP user directory.
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 Cisco fix for bug CSCse92417 or upgrade to a patched IOS version. Additionally, restrict SIP access through ACLs to limit exposure to untrusted networks.
Fix this in Callmanager Express
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-2006-4032 — 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-2006-4032 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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