CVE-2026-6094 | Heap buffer overread in wc_PKCS7_DecodeEnvelopedData when pa… | CVSS 6.3 MEDIUM

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.

Metadata

CVE ID: CVE-2026-6094
State: PUBLISHED
Assigner: wolfSSL
Reserved: 2026-04-10 16:18 UTC
Published: 2026-06-25 16:35 UTC
Last updated: 2026-06-25 17:59 UTC
Primary CWE: CWE-125
CWE-125 Out-of-bounds Read
Vendor / Product: wolfSSL / wolfSSL
Sources: cve.org · NVD

Severity & Metrics

6.3 MEDIUM CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
wolfSSL	wolfSSL	—	5.8.0 ≤ 5.9.1

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	CWE-125 Out-of-bounds Read

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.3	MEDIUM	4.0	cna	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

References (2)