Security readout for executives and security teams
A specially formed BGP route announcement can crash and reload a Cisco NX-OS device if that device has a complex inbound BGP regular expression configured. The business risk is network interruption, not data theft. The source bundle does not identify specific NX-OS versions or a CVSS score, so teams should confirm exposure against Cisco guidance. Exposure is likely limited to Cisco NX-OS devices running BGP with complex inbound route regular expressions. Internet-edge or interdomain BGP peers have higher concern. The supplied sources do not list exact products, platforms, or versions. Prioritize if Cisco NX-OS devices support critical routing or external BGP connectivity. The impact is availability loss from device reloads. Urgency depends on whether complex inbound BGP regex is actually configured. Mitigation focus: Review Cisco's advisory for affected NX-OS releases and fixed software guidance.; Inventory NX-OS devices running BGP and inbound AS-path regex policies.; Reduce or simplify complex inbound BGP regular expressions where operationally feasible..
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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ATT&CK lookup starting points
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CVE-2013-1121 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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