CVE-1999-1090

CVE-1999-1090 describes a vulnerability in the default configuration of the NCSA Telnet package for Macintosh and PC, where FTP is enabled despite the absence of an explicit "ftp=yes" setting. This flaw allows remote attackers to read and modify arbitrary files on affected systems. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to unauthorized disclosure, modification, and denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this decades-old vulnerability.