CVE-2026-6678: Integer underflow in wc_PKCS7_DecryptOri handling crafted Other Recipient Info

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-07-01

EPSS Score

0.16% (percentile: 5.7%)

Affected Products (1)

Other

• 21516-17084

Revision History

• 2026-07-01: Information published.