Security readout for executives and security teams
CVE-2013-5543 can make certain Cisco ASR 1000 routers reload when they process malformed ICMP error packets tied to inspected TCP or UDP sessions. In business terms, this is a remote denial-of-service risk against routing infrastructure, but only for affected IOS XE releases using Zone-Based Firewall inspection. Exposure appears limited to Cisco ASR 1000 routers running the named IOS XE 3.4 or 3.5 vulnerable releases with ZBFW inspecting TCP or UDP sessions. Organizations without those platforms, releases, or inspection paths are not indicated as affected by the supplied sources. Treat this as a targeted infrastructure availability issue. It is not shown as actively exploited in the bundle, but affected edge or aggregation routers could suffer service interruption. Remediate during the next controlled network maintenance window, faster for internet-facing or high-availability paths. Mitigation focus: Identify ASR 1000 routers running IOS XE 3.4 or 3.5 trains.; Upgrade vulnerable releases to Cisco-fixed versions, such as 3.4.2S or 3.5.1S, where applicable.; Review Cisco advisory guidance for any platform-specific upgrade path or operational workaround..
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-2013-5543 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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