CVE-2021-42554CWE-787

CVE-2021-42554

High · published February 3, 2022

CVSS v3.1
8.2
EPSS
0%
Percentile
24.5
In the wild
Unconfirmed
What it is

An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00327 · 24.5th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2022-02-03T07:15Z
Affected products (21)
ProductVersionsFixed in
insyde/insydeh2o≥ 5.0, < 5.08.425.08.42
insyde/insydeh2o≥ 5.1, < 5.16.425.16.42
insyde/insydeh2o≥ 5.2, < 5.26.425.26.42
insyde/insydeh2o≥ 5.3, < 5.35.425.35.42
insyde/insydeh2o≥ 5.4, < 5.42.515.42.51
insyde/insydeh2o≥ 5.5, < 5.50.515.50.51
siemens/simatic_field_pg_m5_firmwareall versions—
siemens/simatic_field_pg_m6_firmwareall versions—
siemens/simatic_ipc127e_firmwareall versions—
siemens/simatic_ipc227g_firmwareall versions—
siemens/simatic_ipc277g_firmwareall versions—
siemens/simatic_ipc327g_firmwareall versions—
siemens/simatic_ipc377g_firmwareall versions—
siemens/simatic_ipc427e_firmwareall versions—
siemens/simatic_ipc477e_firmwareall versions—
siemens/simatic_ipc627e_firmwareall versions—
siemens/simatic_ipc647e_firmwareall versions—
siemens/simatic_ipc677e_firmwareall versions—
siemens/simatic_ipc847e_firmwareall versions—
siemens/simatic_itp1000_firmwareall versions—
siemens/ruggedcom_ape1808_firmwareall versions—
References (10)
EPSS history
Timeline
  • 03 FEB 01:40Z
    An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before…
    cvelistv5