CVE-2025-65501

Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where…

Medium · published November 24, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
17.4
In the wild
Unconfirmed
What it is

Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSL_get_app_data() returns NULL.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00265 · 17.4th percentile
Published
2025-11-24T00:00Z
EPSS history
Timeline
  • 24 NOV 00:00Z
    Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where…
    cvelistv5