CVE-2025-65501 Affecting libcoap3 package, versions <4.3.5-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBCOAP3-14104219
- published25 Nov 2025
- disclosed24 Nov 2025
Introduced: 24 Nov 2025
CVE-2025-65501 (opens in a new tab)How to fix?
Upgrade Debian:unstable libcoap3 to version 4.3.5-2 or higher.
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:unstable relevant fixed versions and status.
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.