CVE-2026-4159
wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read
- State
- Published
- Severity
- 1.2 Low
- Published
- Mar 19, 2026
- Updated
- Mar 20, 2026
- Reserved
- Mar 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 1.2 Low | 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 | wolfSSL |
Weaknesses
- CWE-125 Out-of-bounds read
Affected Products
| Product | Versions |
|---|---|
wolfSSLwolfSSL |
|
References
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