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.
INFO
Published Date :
2026-03-19T21:17:46.357Z
Last Modified :
2026-03-20T16:29:05.925Z
Source :
wolfSSL
AFFECTED PRODUCTS
The following products are affected by CVE-2026-4159 vulnerability.
| Vendors | Products |
|---|---|
| Wolfssl |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4159.
| URL | Resource |
|---|---|
| https://github.com/wolfSSL/wolfssl/pull/9945 |
|
CVSS Vulnerability Scoring System
Detailed values of each vector for above chart.
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Privileges Required
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SS Confidentiality
SS Integrity
SS Availability