CVE-2022-35895

Name: CVE-2022-35895
Creator: NVD / NIST
Published: 2022-09-21T21:15:09.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2022-35895 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. The FwBlockSericceSmm driver does not properly validate input parameters for a software SMI routine, leading to memory corruption of arbitrary addresses including SMRAM, and possible arbitrary code execution.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. The FwBlockSericceSmm driver does not properly validate input parameters for a software SMI routine, leading to memory corruption of arbitrary addresses including SMRAM, and possible arbitrary code execution.

Metrics

CVSS 3.1

8.2/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.34%

26.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Insyde	Insydeh2o	>= 5.0, < 05.09.37
Insyde	Insydeh2o	>= 5.1, < 05.17.37
Insyde	Insydeh2o	>= 5.2, < 05.27.29
Insyde	Insydeh2o	>= 5.3, < 05.36.29
Insyde	Insydeh2o	>= 5.4, < 05.44.29
Insyde	Insydeh2o	>= 5.5, < 05.52.29

References

https://binarly.io/advisories/BRLY-2022-024/index.htmlExploit, Third Party Advisory
https://www.insyde.com/security-pledgeVendor Advisory
https://www.insyde.com/security-pledge/SA-2022033Vendor Advisory
https://binarly.io/advisories/BRLY-2022-024/index.htmlExploit, Third Party Advisory
https://www.insyde.com/security-pledgeVendor Advisory
https://www.insyde.com/security-pledge/SA-2022033Vendor Advisory

Timeline

Published: Sep 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-35895?

How severe is CVE-2022-35895?

CVE-2022-35895 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2022-35895?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-35895?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST