CVE-2026-104074 — Coturn 4.10.0 Uninitialized Stack Memory Disclosure via ERROR-CODE
Coturn 4.10.0 contains an uninitialized memory disclosure vulnerability that allows remote unauthenticated attackers to leak stack memory contents by sending a TURN Allocate req…
Published: 2026-10-07 · CVSS: 6.9 · CVSS 4.0
Coturn 4.10.0 contains an uninitialized memory disclosure vulnerability that allows remote unauthenticated attackers to leak stack memory contents by sending a TURN Allocate request without credentials. Attackers can exploit the stun_init_error_response_common_str() function in src/client/ns_turn_msg.c, which fails to zero-initialize the avalue buffer before computing its length with strlen() and copying leaked stack bytes into the ERROR-CODE reason phrase, exposing pointer fragments that weaken ASLR and enable precise version fingerprinting.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7