Out-of-bounds Read in Wolfssl
CVE-2026-5392
Heap out-of-bounds read in PKCS7 parsing. A crafted PKCS7 message can trigger an OOB read on the heap. The missing bounds check is in the indefinite-length end-of-content verification loop in PKCS7_VerifySignedData().
Vulnerability class: Buffer Overflow
EPSS: 0.000 (3.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
Affected products
- Wolfssl — versions 0
Weakness classification (CWE)
References
- facts@wolfssl.com (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2026-5392?
- CVE-2026-5392 is a medium-severity vulnerability in Wolfssl, classified under Out-of-bounds Read. CVSS score: 5.4/10. Published 2026-04-10.
- How severe is CVE-2026-5392?
- Medium severity. CVSS v3 base score is 5.4 out of 10.