Security readout for executives and security teams
This flaw can let a remote attacker crash or hang affected Cisco routing devices by sending malicious SIP traffic to TCP port 5060. For executives, the business concern is network outage risk, not data theft, especially where older Cisco IOS or IOS XE devices still perform NAT for voice-related traffic. Exposure is most likely in legacy Cisco environments running the listed IOS or IOS XE versions with NAT enabled and SIP over TCP/5060 reachable from untrusted networks. The bundle does not identify specific models, default configurations, or CPEs. Treat this as a high-priority legacy network resilience issue if affected Cisco devices remain in routing or voice paths. It can create outages, and the available bundle does not provide enough detail to assume compensating controls or a safe configuration. Mitigation focus: Review Cisco advisory guidance for fixed software or recommended upgrade paths.; Inventory Cisco IOS and IOS XE devices against the affected version ranges.; Restrict unnecessary TCP/5060 exposure to trusted networks where operationally possible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2011-3276 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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