rplay through 3.3.2 allows attackers to cause a denial of service (SIGSEGV and daemon crash) or possibly have unspecified other impact. This occurs in memcpy in the RPLAY_DATA case in rplay_unpack in librplay/rplay.c, potentially reachable via packet data with no authentication.
https://www.openwall.com/lists/oss-security/2025/10/18/4
https://web.archive.org/web/20171109100411/http://rplay.doit.org