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🛡️ CVE-2025-66602 — tools

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-291 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation.

The web server accepts

access by IP address. When a worm that randomly searches for IP addresses

intrudes into the network, it could potentially be attacked by the worm.

The

affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to

R10.04

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-66602 is classified as CWE-291: Reliance on IP Address for Authentication. The product uses an IP address for authentication.

Affected software

CVE-2025-66602 is recorded against 1 package.

  • fast\/tools (from r9.01 up to r10.04)

Timeline and source

Published on 9 February 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

web-material3.yokogawa.com

Other advisories for this package

fast\/tools has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-291: Reliance on IP Address for Authentication) in other software:

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-291
Public Exploit ✅ No
Source NVD
Published 2026-02-09
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
fast\/tools r9.01 r10.04

Exploit Protection

Are you running tools?

CVE-2025-66602 carries CVSS 9.8 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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