Security readout for executives and security teams
This old CVE describes a Cisco IOS 12.0 NAT condition where input access lists may fail to filter some packets. In business terms, a router expected to block traffic might allow traffic through. The public record does not provide affected version granularity, CVSS severity, a patch, or exploit evidence. Likely limited to legacy Cisco routers using IOS 12.0 with NAT and input ACLs. The source bundle lists affected vendor/product as n/a, so exposure cannot be scoped precisely from these sources alone. Investigate if legacy Cisco IOS 12.0 routers remain in production. If present at network edges, prioritize vendor-guided remediation because the issue affects traffic filtering trust. Mitigation focus: Inventory Cisco routers still running IOS 12.0 with NAT enabled.; Check Cisco guidance or archived advisories for affected releases and fixed versions.; Prioritize replacement or upgrade of unsupported legacy IOS 12.0 devices..
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-1999-0445 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
Products and packages named in the record
CWE details
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