CVE-2026-21863: Malformed Valkey Cluster bus message can lead to Remote DoS

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Feb

Released

2026-02-26

EPSS Score

0.01% (percentile: 2.9%)

Affected Products (1)

Other

• 20928-17084

Revision History

• 2026-02-26: Information published.