CVE-2025-65496

CVE-2025-65496CVE-2025-65496

libcoap / libcoap

Description

NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.

Scoring

CVSS 4.3 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Last modified2026-11-05
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.