CVE intelligence and bounded remediation

CVE-2021-42681 — A Buffer Overflow vulnerability exists in Accops HyWorks DVM Tools prior to v3.3.1.105

High CVSS 8.8

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 crafted I/O Request Packet.

Severity
High
CVSS
8.8 (3.1)
Published
2021-12-07
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-120

Affected products

  • accops / hyworks_dvm_tools

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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