CVE-2026-6094

CRITICAL

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.

CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Published: 6/25/2026Modified: 6/26/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-6094 — Heap buffer overread in wc_PKCS7_DecodeEnvelopedData when parsing crafted PKCS7 ...

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.

CVE-2026-6094
NIST NVD

References (2)

https://github.com/wolfSSL/wolfssl/pull/10128Issue TrackingPatchhttps://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory