CVE-2026-67191 Xlight FTP Server < 3.9.5 Pre-Auth Heap Buffer Overflow via SSH Parser

Xlight FTP Server before 3.9.5 contains a pre-authentication heap buffer overflow vulnerability that allows remote unauthenticated attackers to write past the end of a heap buffer by sending a malformed SSH client identification string. A logic error in the recv loop's termination condition uses ...