CVE-2025-65495

CVE-2025-65495 affects libcoap 4.3.5. The issue is a signedness error in tls_verify_call_back() inside src/coap_openssl.c that can allow a remote attacker to trigger a denial of service by sending a crafted TLS certificate, causing i2d_X509() to return -1 and be misused as a malloc() size. Public...