High severity7.5NVD Advisory· Published Nov 24, 2025· Updated Jun 17, 2026
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4Patches
Vulnerability mechanics
References
2- github.com/obgm/libcoap/pull/1750nvdIssue TrackingPatch
- github.com/obgm/libcoap/issues/1744nvdIssue Tracking
News mentions
0No linked articles in our index yet.