Unrated severityNVD Advisory· Published Nov 24, 2025· Updated Nov 24, 2025
CVE-2025-65493
CVE-2025-65493
Description
NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIO_get_data() to return NULL.
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Affected products
3- OISM/libcoapdescription
Patches
Vulnerability mechanics
References
2News mentions
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