CVE-2026-80709: s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs

Overview

Severity

Critical (CVSS 9.8)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-29

EPSS Score

0.12% (percentile: 2.0%)

Affected Products (1)

Other

• 21684-17084

Revision History

• 2026-08-29: Information published.