Out-of-bounds Read in Libcoap
CVE-2025-59391
A memory disclosure vulnerability exists in libcoap's OSCORE configuration parser in libcoap before release-4.3.5-patches. An out-of-bounds read may occur when parsing certain configuration values, allowing an attacker to infer or read mem…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (12.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
Affected products
- Libcoap
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Release Notes)
- cve@mitre.org (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2025-59391?
- CVE-2025-59391 is a medium-severity vulnerability in Libcoap, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2025-12-08.
- How severe is CVE-2025-59391?
- Medium severity. CVSS v3 base score is 6.5 out of 10.