by Kastro
Paper/Archive/CVE-2026-6094

CVE-2026-6094

wolfSSL wolfSSL — Heap buffer overread in wc_PKCS7_DecodeEnvelopedData parsing crafted PKCS7 EnvelopedData

EPSS 0.5%CVSS 9.1
critical.is priorityof 100
36
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 43.9.439 × 208.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Heap buffer overread in wc_PKCS7_DecodeEnvelopedData when parsing crafted PKCS7 EnvelopedData. This could theoretically be triggered by attacker-supplied data delivered via S/MIME or CMS.

Affected

ProductAffectedFixed inSource
wolfSSL5.8.0 – 5.9.1–CNA

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:N/VA:L/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

patchgithub.com/wolfSSL/wolfssl/pull/10128refwolfssl.com/docs/security-vulnerabilities