CVE-2026-4159 — wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read

CVE-2026-4159

wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
wolfSSL / wolfSSL	affected 0 before 5.9.0

CWE

CWE-125

References

https://github.com/wolfSSL/wolfssl/pull/9945

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.