NULL Pointer Dereference Affecting libcoap package, versions [0,]
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- published25 Nov 2025
- disclosed24 Nov 2025
- creditQingpeng Du
Introduced: 24 Nov 2025
NewCVE-2025-65498 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference via the coap_dtls_generate_cookie() function. An attacker can cause a crash of the application by sending a specially crafted DTLS handshake that results in SSL_get_SSL_CTX() returning NULL.