CVE-2026-11721: Cache poisoning possible with label count discrepancy, RRSIG, and wildcards

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-07-25

EPSS Score

0.39% (percentile: 31.1%)

Affected Products (1)

Other

• 21616-17084

Revision History

• 2026-07-25: Information published.