CVE-2026-55737

The CVE-2026-55737 issue is a heap-pointer corruption in Erlang/OTP’s erts external term format decoder. During LARGE_TUPLE_EXT decoding, the arity is read as unsigned in the validation pass but as signed in the decode pass, allowing 0x80000000 to produce -2147483648 and advancing the heap pointe...

CVE-2026-49759

CVE-2026-49759 affects Erlang OTP erts inet_drv SCTP error handling. The sctp_parse_error_chunk() writes cause codes into a fixed-size stack-allocated spec[] without bounds checks, allowing a remote attacker who has SCTP access to overflow the stack and crash the BEAM VM (DoS). A crafted SCTP ERR...

CVE-2026-42792

CVE-2026-42792 (epmd DoS) : The mis-handling of EMFILE/ENFILE in erts/epmd/src/epmd_srv.c allows unauthenticated remote attackers to permanently terminate the Erlang Port Mapper Daemon (epmd) by exhausting per-process/system file descriptor slots. The do_accept path calls epmd_cleanup_exit() on t...

CVE-2026-54890

CVE-2026-54890 describes an Integer Underflow in the BEAM VM’s ETF decoder: the BIT_BINARY_EXT (tag 77) handler accepts an encoding with length and trailing-bits both zero, causing the bitstring size calculation to underflow and produce a ~2^64 value, which is then used as a memory allocation siz...