CVE Catalog

CVE-2026-102712

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Summary

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first packet.

Risk Assessment

An attacker can access fragments of process memory, potentially leading to disclosure of sensitive data or service crash.

Recommendation

Update the DTLS library to a patched version and restrict DTLS service access to trusted clients only.

Related vulnerabilities

Original NVD description (English source)

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first packet.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS