Security readout for executives and security teams
This vulnerability can let a remote attacker disrupt affected Cisco voice and network devices by sending malformed SIP traffic. The documented impact is memory exhaustion followed by process failure or device reload, which can interrupt communications services. The sources identify old CUCM and Cisco IOS releases; active exploitation is not shown. Exposure is most likely in legacy environments still running affected CUCM releases or Cisco IOS 12.4/15.1 with SIP reachable from untrusted networks, partners, trunks, or internal segments. Modern upgraded environments are less likely exposed, but version and SIP reachability must be verified. Treat this as high priority only where affected legacy Cisco voice or IOS systems remain in service and SIP is exposed. The business risk is service outage, not data theft. If systems are upgraded or SIP is tightly restricted, urgency drops after verification. Mitigation focus: Upgrade CUCM to 6.1(5)su2, 7.1(5b)su3, 8.0(3a)su1, 8.5(1), or later.; Check Cisco guidance for applicable IOS fixed releases and platform-specific remediation.; Restrict SIP access to trusted peers, trunks, and management-approved network 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-2011-0941 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
Products and packages named in the record
CWE details
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