VULNERABILITY INTELLIGENCE

CVE-2021-33834

CVSS score7.1 HIGH
EPSS probability0.19%
CISA KEVNot currently listed
Published2023-09-08
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references