CVE-2026-5393
9.1
CRITICAL
CVSS 3.1
EPSS 0.05%
Description
Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL.
How to fix CVE-2026-5393
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/wolfssl—no fix listed
Is CVE-2026-5393 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |