Description
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM memory corruption vulnerability in the FvbServicesRuntimeDxe driver allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge/SA-2022035
Third Party Advisory x_refsource_misc
https://binarly.io/advisories/BRLY-2022-026/index.html
Scores
CVSS v3
8.2
EPSS
0.0021
EPSS Percentile
11.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-20
Status
published
Products (1)
insyde/insydeh2o
5.0 - 05.09.37
Published
Sep 23, 2022
Tracked Since
Feb 18, 2026