VULNERABILITY INTELLIGENCE

CVE-2025-65495

CVSS score7.5 HIGH
EPSS probability0.26%
CISA KEVNot currently listed
Published2025-11-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-195

Primary references