Integer overflow in wolfSSL - CVE-2026-6678
Published: July 1, 2026
Vulnerability identifier: #VU136652
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-6678
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wolfSSL
Affected software:
wolfSSL
wolfSSL
Detailed vulnerability description
The vulnerability allows a remote attacker to cause incorrect length handling during decryption.
The vulnerability exists due to an integer overflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info. A remote attacker can supply crafted Other Recipient Info to cause incorrect length handling during decryption.
How to mitigate CVE-2026-6678
Install security update from vendor's website.