EUVD-2025-198714

Integer signedness error in tlsverifycallback in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2dX509 to return -1 and be misused as a malloc size parameter...

CVE-2025-65495

Integer signedness error in tlsverifycallback in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2dX509 to return -1 and be misused as a malloc size parameter...

CVE-2025-65495

The libcoap library (version 4.3.5) contains an integer signedness error in the tls_verify_call_back() function located in src/coap_openssl.c. This vulnerability allows a remote attacker to trigger a denial of service by providing a crafted TLS certificate. Specifically, the i2d_X509() function m...