What is the CVSS score of CVE-2025-66678?

CVE-2025-66678 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Hardware Read Write Utility are affected by CVE-2025-66678?

A critical vulnerability in Nil Hardware Editor (CVE-2025-66678) enables attackers to execute arbitrary read/write operations on affected systems with a 9.8 CVSS score.

Is there a public PoC exploit available for CVE-2025-66678?

Yes, a public proof-of-concept exploit is available for CVE-2025-66678. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-66678?

Within 24 hours: Inventory all systems running Nil Hardware Editor and isolate affected machines from critical networks pending remediation. Within 7 days: Implement compensating controls (network segmentation, access restrictions, process monitoring) and contact Nil Software for patch timeline. Within 30 days: Transition to patched version immediately upon availability or replace the software with alternatives; conduct forensic review of affected systems for signs of compromise.

Hardware Read Write Utility CVE-2025-66678

CRITICAL

SQL Injection (CWE-89)

2026-03-04 cve@mitre.org

RCE SQLi Hardware Read Write Utility

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 09, 2026 - 17:33 vuln.today

Public exploit code

CVE Published

Mar 04, 2026 - 17:16 nvd

CRITICAL 9.8

DescriptionCVE.org

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.