CVE-2021-42554

Description

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory insyde.com Vendor Advisory insyde.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.insyde.com/security-pledge vendor advisory
https://www.insyde.com/security-pledge/SA-2022012 vendor advisory
https://security.netapp.com/advisory/ntap-20220216-0007/ third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-42554?
CVE-2021-42554 has been scored as a high severity vulnerability.
How to fix CVE-2021-42554?
To fix CVE-2021-42554, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42554 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-42554 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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