CVE-2026-80823: nfc: st21nfca: validate ATR_REQ length against the received frame

Overview

Severity

High (CVSS 8.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-07

EPSS Score

0.19% (percentile: 9.3%)

Affected Products (1)

Other

• 21684-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-07: Information published.