CVE-2026-4159

| EUVD-2026-13233 LOW
2026-03-19 wolfSSL
1.2
CVSS 4.0

CVSS Vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None

Lifecycle Timeline

3
Analysis Generated
Mar 19, 2026 - 22:00 vuln.today
EUVD ID Assigned
Mar 19, 2026 - 22:00 euvd
EUVD-2026-13233
CVE Published
Mar 19, 2026 - 21:17 nvd
LOW 1.2

Description

1-byte OOB heap read in wc_PKCS7_DecodeEnvelopedData via zero-length encrypted content. A vulnerability existed in wolfSSL 5.8.4 and earlier, where a 1-byte out-of-bounds heap read in wc_PKCS7_DecodeEnvelopedData could be triggered by a crafted CMS EnvelopedData message with zero-length encrypted content. Note that PKCS7 support is disabled by default.

Analysis

1-byte OOB heap read in wc_PKCS7_DecodeEnvelopedData via zero-length encrypted content.

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Remediation

During next maintenance window: Apply vendor patches when convenient. Verify out-of-bounds read controls are in place.

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Priority Score

6
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +6
POC: 0

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CVE-2026-4159 vulnerability details – vuln.today

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