CVE-2020-5212

CVE-2020-5212 is a critical buffer overflow vulnerability affecting NetHack versions prior to 3.6.5. An excessively long value in the MENUCOLOR configuration option can lead to application crashes, remote code execution, or privilege escalation. This vulnerability is rated 9.8 CRITICAL (CVSSv3.1) due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or Metasploit modules, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.