Medium severity4.3NVD Advisory· Published Nov 24, 2025· Updated Jun 17, 2026
CVE-2025-65501
CVE-2025-65501
Description
Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSL_get_app_data() returns NULL.
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Affected products
4Patches
Vulnerability mechanics
References
2- github.com/obgm/libcoap/issues/1748nvdIssue Tracking
- github.com/obgm/libcoap/pull/1750nvdIssue Tracking
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