CVE-2025-66678

Name: CVE-2025-66678
Creator: NVD / NIST
Published: 2026-03-04T17:16:17.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2025-66678 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Faintsnow	Hardware Read \& Write Utility	<= 1.25.11.26

References

https://github.com/Faintsnow/HEBroken Link
https://github.com/cwjchoi01/CVE-2025-66678Exploit, Third Party Advisory

Timeline

Published: Mar 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66678?

How severe is CVE-2025-66678?

CVE-2025-66678 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66678?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-66678?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST