Out-of-bounds Read Affecting wolfssl package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-WOLFSSL-15762309
- published24 Mar 2026
- disclosed19 Mar 2026
- creditHaruto Kimura
Introduced: 19 Mar 2026
NewCVE-2026-4159 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the wc_PKCS7_DecodeEnvelopedData function when processing a crafted CMS EnvelopedData message containing zero-length encrypted content. An attacker can cause a 1-byte out-of-bounds heap read by supplying such a message. This is only exploitable if PKCS7 support is enabled.