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High severity7.1NVD Advisory· Published Sep 8, 2023· Updated Jun 17, 2026

CVE-2021-33834

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Insyde/H2OFFT2 versions
    cpe:2.3:a:insyde:h2offt:6.20.00:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:insyde:h2offt:6.20.00:*:*:*:*:*:*:*
    • (no CPE)range: <=6.20.00
  • Insyde/Iscflashx64.sys
    cpe:2.3:a:insyde:iscflashx64.sys:3.9.3.0:*:*:*:*:*:*:*
  • Insyde/H2OFFTdescription

Patches

Vulnerability mechanics

References

2

News mentions

0

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