Security readout for executives and security teams
This flaw can let a remote attacker crash a Cisco Unified Communications Manager process by sending a malformed SIP message. The business impact is voice-service disruption, not data theft. It matters most where old CUCM systems still handle SIP traffic from untrusted or poorly filtered networks. Exposure is most likely in organizations still running legacy CUCM versions before 6.1(5)su2, 7.1(5)su1, 8.0(3), or 8.5(1). Risk increases if SIP signaling reaches CUCM from external trunks, partner networks, or insufficiently trusted internal segments. Treat as a legacy voice availability risk. Prioritize remediation if affected CUCM systems support critical call flows or receive SIP from less trusted networks. If CUCM is already upgraded beyond the listed versions, residual urgency is low. Mitigation focus: Upgrade CUCM to Cisco fixed releases or later supported versions.; Review Cisco advisory guidance for CSCtg62855 and related CUCM vulnerabilities.; Restrict SIP signaling to trusted trunks, gateways, and management paths..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-2011-1606 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- ucm-sip-message-dos(67124)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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