Unrated severityNVD Advisory· Published Nov 24, 2025· Updated Nov 24, 2025
CVE-2025-65495
CVE-2025-65495
Description
Integer signedness 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 TLS certificate that causes i2d_X509() to return -1 and be misused as a malloc() size parameter.
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Affected products
3- OISM/libcoapdescription
Patches
Vulnerability mechanics
References
2News mentions
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