VDB
CVE-2026-4159
CVE-2026-4159
PUBLISHED
CVSS 1.2000000476837158 LOW
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.
EPSS 0.02% · 5.1th percentile
Risk Scores
CVSS v4.0
1.2000000476837158
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
EPSS Score
0.02%
5.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfSSL | wolfSSL | 0, 0, 0 |
Timeline
- Mar 19, 2026 CVE Published
- Mar 19, 2026 PoC Published
- Mar 20, 2026 EPSS Score
- Mar 20, 2026 CVE Updated
- Mar 21, 2026 EPSS Score
- Mar 21, 2026 Coalition ESS Score
- Mar 22, 2026 EPSS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- Mar 29, 2026 Security Advisory
- May 18, 2026 EPSS Score