CVE-2025-65493
HIGH7.5EPSS 0.23%Published: 11/24/2025Modified: 4/28/2026
Description
NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIO_get_data() to return NULL.
Affected packages (2)
- Debian/libcoap2from 0
- Debian/libcoap3from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |