Security readout for executives and security teams
This is an old Cisco core-router denial-of-service issue. A remote traffic flood can force affected Cisco 12000 routers to spend excessive CPU generating ICMP Unreachable replies, potentially disrupting routing availability. The source bundle does not provide CVSS or confirmed exploitation. Exposure is likely limited to legacy Cisco 12000 environments matching IOS 12.0 and Engine 2 or earlier line cards, especially where untrusted traffic can reach routed interfaces. Treat this as a legacy infrastructure availability risk. It is not evidence of compromise, but affected edge or core routers could suffer service degradation if exposed to hostile traffic. Mitigation focus: Identify any Cisco 12000 routers still in service.; Check Cisco’s advisory for fixed IOS or supported configuration guidance.; Prioritize upgrade or retirement of matching legacy routers..
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-2001-0861 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
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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
- cisco-icmp-unreachable-dos(7536)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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