CVE-2026-34183: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler

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/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-13

Last Updated

2026-08-07

EPSS Score

1.05% (percentile: 62.3%)

Affected Products (1)

Other

• 21264-17084

Revision History

• 2026-06-13: Information published.
• 2026-06-20: Information published.
• 2026-06-23: Information published.
• 2026-08-07: Information published.