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CVE-2021-42686

HIGH
8.8
CVSS Score
Published: December 7, 2021 at 08:08 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
1 product affected across 1 vendorHyworks Windows Client

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%

Description

An Integer Overflow exists in Accops HyWorks Windows Client prior to v 3.2.8.200. The IOCTL Handler 0x22001B in the Accops HyWorks Windows Client prior to v 3.2.8.200 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Hyworks Windows Client· Accops
95%
v < 3.2.8.200
Affected range stops below 3.2.8.200, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
Source: [email protected]
https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/

CVSS

8.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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