CVE-2021-33834

Description

An issue was discovered in iscflashx64.sys 3.9.3.0 in Insyde H2OFFT 6.20.00. When handling IOCTL 0x22229a, the input used to allocate a buffer and copy memory is mishandled. This could cause memory corruption or a system crash.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory insyde.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.insyde.com/security-pledge not applicable
https://www.insyde.com/security-pledge/SA-2021004 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-33834?
CVE-2021-33834 has been scored as a high severity vulnerability.
How to fix CVE-2021-33834?
To fix CVE-2021-33834, 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-2021-33834 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-33834 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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