CVE-2026-34182: CMS AuthEnvelopedData Processing May Accept Forged Messages

Overview

Severity

Critical (CVSS 9.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-13

EPSS Score

0.01% (percentile: 0.2%)

Affected Products (7)

Other

• 21217-17084
• 21450-17084
• 21370-17084
• 21264-17084
• 21380-17084
• 21400-17084
• 21433-17084

Revision History

• 2026-06-13: Information published.