Unrated severityNVD Advisory· Published Nov 24, 2025· Updated Nov 24, 2025
CVE-2025-65497
CVE-2025-65497
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.
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Affected products
3- OISM/libcoapdescription
Patches
Vulnerability mechanics
References
2News mentions
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