CVE-2021-46792

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to…

Medium · published May 9, 2023

CVSS v3.1
5.9
EPSS
0%
Percentile
32.5
In the wild
Unconfirmed
What it is

Time-of-check Time-of-use (TOCTOU) in the

BIOS2PSP command may allow an attacker with a malicious BIOS to create a race

condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon

an S3 resume event potentially leading to a denial of service.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00395 · 32.5th percentile
Published
2023-05-09T19:01Z
EPSS history
Timeline
  • 09 MAY 19:01Z
    Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to…
    cvelistv5