Vulnerability Details CVE-2025-65499
Array index error in tls_verify_call_back() 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_ex_data_X509_STORE_CTX_idx() to return -1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 32.9%
CVSS Severity
CVSS v3 Score 4.3