
CVE-2005-0468 – Multiple Vendor Telnet Client - Env_opt_add Heap Buffer Overflow
https://notcve.org/view.php?id=CVE-2005-0468
28 Mar 2005 — Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated. • https://www.exploit-db.com/exploits/25303 •

CVE-2005-0469
https://notcve.org/view.php?id=CVE-2005-0469
28 Mar 2005 — Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands. • ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:01.telnet.asc •

CVE-1999-1090
https://notcve.org/view.php?id=CVE-1999-1090
10 Sep 1991 — The default configuration of NCSA Telnet package for Macintosh and PC enables FTP, even though it does not include an "ftp=yes" line, which allows remote attackers to read and modify arbitrary files. • http://www.cert.org/advisories/CA-1991-15.html •