Cyber Resilience

CVE-2021-42681

HighPublic PoC

Published: 07 December 2021

Published
07 December 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0008 22.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42681 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Accops Hyworks Dvm Tools. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 22.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A Buffer Overflow vulnerability exists in Accops HyWorks DVM Tools prior to v3.3.1.105. The IOCTL Handler 0x22001B allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially…

more

crafted I/O Request Packet.

CWE(s)
CWE-120

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

accops
hyworks dvm tools
≤ 3.3.1.105

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References