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      <title>CVE-2026-68552 — Coturn: uint16_t truncation overflow in STUN message length causes TCP stream framing bypass</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-68552</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; coturn&lt;/p&gt;
&lt;p&gt;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&amp;#39;s connection. Other clients and the server process are not affected. This issue is fixed in version 4.15.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; coturn&lt;/p&gt;
&lt;p&gt;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&amp;#39;s connection. Other clients and the server process are not affected. This issue is fixed in version 4.15.0.&lt;/p&gt;</content:encoded>
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