CVE-2026-32746 affects telnetd in GNU inetutils through version 2.7, allowing an out-of-bounds write vulnerability in the LINEMODE SLC (Set Local Characters) suboption handler. The vulnerability occurs because the add_slc function does not properly check whether the buffer is full before writing data. This buffer overflow condition could potentially be exploited by attackers to execute arbitrary code or cause denial of service. The vulnerability affects all versions of GNU inetutils up to and including version 2.7. Given the widespread use of telnetd in network services, this represents a significant security risk for affected systems.