CVE-2021-38578CWE-124

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize

High · published March 3, 2022

CVSS v3.1
7.4
EPSS
1%
Percentile
63.0
In the wild
Unconfirmed
What it is

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.01019 · 63.0th percentile
Weakness
CWE-124 · Buffer Underwrite ('Buffer Underflow')
Published
2022-03-03T21:53Z
EPSS history
Timeline
  • 03 MAR 21:53Z
    Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize
    cvelistv5