VULNERABILITY INTELLIGENCE

CVE-2026-4159

CVSS score3.3 LOW
EPSS probability0.10%
CISA KEVNot currently listed
Published2026-03-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Weakness classification

  • facts@wolfssl.com: CWE-125

Primary references