Stack-based Buffer Overflow Affecting wolfssl/wolfssl package, versions [,5.9.1)
Threat Intelligence
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-UNMANAGED-WOLFSSLWOLFSSL-15990729
- published12 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
NewCVE-2026-5295 (opens in a new tab)How to fix?
Upgrade wolfssl/wolfssl to version 5.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the wc_PKCS7_DecryptOri function when processing a CMS EnvelopedData message containing an OtherRecipientInfo recipient. An attacker can execute arbitrary code or cause a crash by sending a crafted message with an OID longer than 32 bytes. This is only exploitable if the library is built with --enable-pkcs7 (disabled by default) and the application has registered an ORI decrypt callback via wc_PKCS7_SetOriDecryptCb().