How severe is CVE-2025-66607?

CVE-2025-66607 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-66607 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66607?

CVE-2025-66607 affects Yokogawa Fast/tools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66607?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66607 have an EU (EUVD) identifier?

Yes. CVE-2025-66607 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207166.

When was CVE-2025-66607 published?

CVE-2025-66607 was published on 2026-02-09 and last updated on 2026-06-17.

CVE-2025-66607

CVE-2025-66607 is a medium-severity vulnerability in Yokogawa Fast/tools with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-358.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.3
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207166
Weakness: CWE-358
Affected product: Yokogawa Fast/tools
Published: 2026-02-09
Last modified: 2026-06-17

Description

A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. The response header contains an insecure setting. Users could be redirected to malicious sites by an attacker. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

Frequently asked questions

What is CVE-2025-66607?: A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. The response header contains an insecure setting. Users could be redirected to malicious sites by an attacker. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04
How severe is CVE-2025-66607?: CVE-2025-66607 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-66607 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66607?: CVE-2025-66607 affects Yokogawa Fast/tools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66607?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66607 have an EU (EUVD) identifier?: Yes. CVE-2025-66607 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207166.
When was CVE-2025-66607 published?: CVE-2025-66607 was published on 2026-02-09 and last updated on 2026-06-17.

References

https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf

Affected products (1)

cpe:2.3:a:yokogawa:fast\/tools:*:*:*:*:*:*:*:*

More vulnerabilities in Yokogawa Fast/tools

CVE-2025-66603 — Critical (CVSS 9.8): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. The web server accepts the…
CVE-2025-66602 — Critical (CVSS 9.8): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. The web server…
CVE-2025-66606 — Critical (CVSS 9.6): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does…
CVE-2025-66598 — High (CVSS 7.5): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports old…
CVE-2025-66597 — High (CVSS 7.5): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports weak…
CVE-2025-66608 — High (CVSS 7.5): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does…

All CVEs affecting Yokogawa Fast/tools →

Other CWE-358 vulnerabilities

CVE-2018-0268 — Critical (CVSS 10.0): A vulnerability in the container management subsystem of Cisco Digital Network Architecture (DNA) Center could allow an…
CVE-2022-25152 — Critical (CVSS 9.9): The ITarian platform (SAAS / on-premise) offers the possibility to run code on agents via a function called procedures.…
CVE-2025-66603 — Critical (CVSS 9.8): A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. The web server accepts the…
CVE-2025-62583 — Critical (CVSS 9.8): Whale Browser before 4.33.325.17 allows an attacker to escape the iframe sandbox in a dual-tab environment.
CVE-2023-3266 — Critical (CVSS 9.8): A non-feature complete authentication mechanism exists in the production application allowing an attacker to bypass all…
CVE-2019-6742 — Critical (CVSS 9.8): This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Galaxy S9…

Browse all CWE-358 vulnerabilities →