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CVE-2025-65498
CVE-2025-65498
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.
Published Nov 25, 2025
https://github.com/obgm/libcoap/issues/1746
CVSS Score
Medium
4.3
Components Impacted
Components Impacted
Security Details
Security Details
Sonatype Research
Sonatype Research
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CVE-2025-65498 | Components Impacted | Sonatype Guide | Sonatype Guide
