The issue is related to a stack buffer overflow vulnerability in the PJSIP multimedia communication library, specifically affecting users of PJSUA2 or those who call the API endpoints `pjmedia sdp print()` and `pjmedia sdp media print()`. This vulnerability can be exploited by a remote attacker to execute arbitrary code or cause a denial of service. Applications not using PJSUA2 and not directly calling `pjmedia sdp print()` or `pjmedia sdp media print()` are not affected.