CVE-2026-4159
wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
2th
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.
| CWE | CWE-125 |
| Vendor | wolfssl |
| Product | wolfssl |
| Published | Mar 19, 2026 |
| Last Updated | Mar 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for wolfssl wolfssl
Be the first to know when new unknown vulnerabilities affecting wolfssl wolfssl are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
wolfSSL / wolfSSL
0 < 5.9.0
Credits
Haruto Kimura (Stella)