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TI-2021-18905 Aliases CVE-2021-42686GHSA-w2h6-9f22-wxjx

An Integer Overflow exists in Accops HyWorks Windows Client prior to v 3.2.8.200.

Priority LOW 39CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.00495 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:accops:hyworks_windows_client:*:*:*:*:*:*:*:*before 3.2.8.200VulnerableAccops
  • cpe:2.3:a:accops:hyworks_windows_client:*:*:*:*:*:*:*:* Versions before 3.2.8.200 Vulnerable ·Accops

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-42686
  2. 2026-10-03 Alias added: GHSA-w2h6-9f22-wxjx

References

Exploit 1

  • TI-2021-18907 An Integer Overflow vulnerability exists in Accops HyWorks Windows Client prior to v… CVSS 3.1HIGH 8.8
  • TI-2021-18906 A Buffer Overflow vulnerability exists in Accops HyWorks Windows Client prior to v… CVSS 3.1HIGH 8.8
  • TI-2021-18903 A Buffer Overflow vulnerability exists in Accops HyWorks Windows Client prior to v… CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences