CVE-2021-33834

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Published Sep 8, 2023 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:insyde:h2offt:6.20.00:::::::*
	cpe:2.3:a:insyde:iscflashx64.sys:3.9.3.0:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-20508	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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.189% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2021004

History

Sep 26, 2024 7:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Insyde H2offt Iscflashx64.sys

Weaknesses

CWE-787

Sources

CVE record Updated: Sep 26, 2024, 6:43 PM

Status: PUBLISHED
Assigner: mitre
Published: Sep 8, 2023, 12:00 AM
Updated: Sep 26, 2024, 6:43 PM
Reserved: Jun 3, 2021, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 11:58 PM

Updated: Aug 3, 2024, 11:58 PM

NVD Updated: Jun 17, 2026, 3:55 AM

Status: Modified
Published: Sep 8, 2023, 2:15 AM
Modified: Jun 17, 2026, 3:55 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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