Buffer overflow in Wolfssl
CVE-2026-3548
Two buffer overflow vulnerabilities existed in the wolfSSL CRL parser when parsing CRL numbers: a heap-based buffer overflow could occur when improperly storing the CRL number as a hexadecimal string, and a stack-based overflow for suffici…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (10.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Wolfssl — versions 0
Weakness classification (CWE)
References
- facts@wolfssl.com (Patch, Issue Tracking)
- facts@wolfssl.com (Exploit, Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2026-3548?
- CVE-2026-3548 is a critical-severity vulnerability in Wolfssl, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-03-19.
- How severe is CVE-2026-3548?
- Critical severity. CVSS v3 base score is 9.8 out of 10.