CVE-2026-7531: Use-after-free in PQC hybrid key-share handling

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-07-01

EPSS Score

0.35% (percentile: 26.5%)

Affected Products (1)

Other

• 21516-17084

Revision History

• 2026-07-01: Information published.