CVE-2026-4159
wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read
Summary
wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read
Original description
The description as published by the source.
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.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-4159 wolfssl
- Ubuntu UBUNTU-CVE-2026-4159 wolfssl
References
- advisory github.com
- advisory nvd.nist.gov
- patch github.com