CVE-2026-68552: falha de média gravidade em coturn
Coturn: uint16_t truncation overflow in STUN message length causes TCP stream framing bypass
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.5%
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, an unauthenticated remote client can send a STUN message over TCP or TLS with a body-length field from 65520 through 65532, causing the uint16_t len variable in stun_get_message_len_str() in src/client/ns_turn_msg.c to wrap when STUN_HEADER_LENGTH is added. The framing layer then consumes only 4 through 16 bytes, treats the remaining bytes as another message, desynchronizes the stream parser, and drops the attacking client's connection. Other clients and the server process are not affected. This issue is fixed in version 4.15.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Produtos afetados
coturn · coturnCVEs relacionadas — coturn
No mesmo produto, das mais perigosas para as menos.
CVE-2020-4067HIGHImproper Initialization in coturnEPSS 1.9%CVE-2020-26262HIGHLoopback bypass in CoturnEPSS 1.5%CVE-2026-40613HIGHCoturn: Misaligned Memory Access in coturn STUN Attribute Parser (Remote DoS on ARM64)EPSS 1.1%CVE-2026-53448HIGHCoturn: SQL Injection in HTTPS Admin Panel Delete OperationsEPSS 0.7%CVE-2026-43994HIGHCoturn: Stack buffer overflow in decode_oauth_token_gcm()EPSS 0.7%CVE-2026-73214HIGHcoturn allocates a full per-peer SSL/session before verifying the DTLS cookie, enabling source-spoofing/botnet state-exhaustion DoSEPSS 0.6%