CVE-2025-4276

UsbCoreDxe: improper input validation may lead to arbitrary code execution

CVSS 7.5 HIGHEPSS 0.1%CWE-20

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

13 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

UsbCoreDxe has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.

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

Affected products

References