CVE-2025-66678

CRITICAL 9.8EPSS 0.6%

An issue in the HwRwDrv.sys component of Nil Hardware Editor Hardware Read & Write Utility v1.25.11.26 and earlier allows attackers to execute arbitrary read and write operations via a crafted request.

CVSS v3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.64% chance of exploitation in the next 30 days, 48th percentile
Published: 2026-03-04
Updated: 2026-03-05

Proof-of-concept exploits (1)

cwjchoi01/CVE-2025-66678

References

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