by Kastro
Paper/Archive/CVE-2026-5393

CVE-2026-5393

wolfSSL wolfSSL — OOB Read in DoTls13CertificateVerify with WOLFSSL_DUAL_ALG_CERTS

EPSS 0.2%CVSS 9.1
critical.is priorityof 100
29
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 9.1.091 × 201.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
wolfSSL< 5.9.15.9.1CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
wolfSSL (CNA)6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/wolfSSL/wolfssl/pull/10079