VULNERABILITY INTELLIGENCE

CVE-2025-65500

CVSS score4.3 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2025-11-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Description

NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476

Primary references