CVE-2026-6094

Heap buffer overread in wc_PKCS7_DecodeEnvelopedData parsing crafted PKCS7 EnvelopedData

State: Published
Severity: 6.3 Medium
Published: Jun 25, 2026
Updated: Jun 25, 2026
Reserved: Apr 10, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	wolfSSL

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
wolfSSLwolfSSL	5.8.0 through 5.9.1Affected

References

https://github.com/wolfSSL/wolfssl/pull/10128patch
https://www.wolfssl.com/docs/security-vulnerabilities/

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