CVE-1999-0843: Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.
Summary
Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.
Severity
UNKNOWN
Source Attribution
Source: NVD · Updated: 2026-08-21T04:30:50.152Z · Confidence: high
Impact
Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.
Affected Software
Fix
Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.