CVE-2025-65497 Affecting libcoap3 package, versions *
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN13-LIBCOAP3-14104217
- published25 Nov 2025
- disclosed24 Nov 2025
Introduced: 24 Nov 2025
NewCVE-2025-65497 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
How to fix?
There is no fixed version for Debian:13 libcoap3.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcoap3 package and not the libcoap3 package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.