CVE Catalog
CVE-1999-0843
MediumExploitation Probability (EPSS)
Elevated risk1.36%
68th percentile - higher than 68% of all known CVEs
Summary
CVE-1999-0843 vulnerability involves a Denial of Service (DoS) attack on Cisco routers running NAT, triggered by a PORT command from an FTP client directed at the Telnet port.
Risk Assessment
An attacker can disrupt access to services on the router, leading to network downtime and loss of availability for users.
Recommendation
It is recommended to monitor and restrict access to the Telnet port and update Cisco router firmware to mitigate this vulnerability.
Original NVD description (English source)
Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.