Vulnerabilities > CVE-2021-33834 - Out-of-bounds Write vulnerability in Insyde H2Offt and Iscflashx64.Sys
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 |