CVE-2025-66598

HIGHNVD 7.57.5—Trending — 3 sources updated this week

7.5

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

This product supports old SSL/TLS versions, potentially allowing an attacker to decrypt communications with the web server.

The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 6.0%
KEV: Not listed

Published

February 9, 2026

Last Modified

March 6, 2026

References (1)

7168b535-132a-4efe-a076-338f829b2eb9https://web-material3.yokogawa.com/1/39206/files/YSAR-26-0001-E.pdf

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-327Use of a Broken or Risky Cryptographic Algorithm

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 14:21 UTCEG score recompute
2026-05-29 14:21 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-66598?

CVE-2025-66598 is a high vulnerability published on February 9, 2026. A vulnerability has been found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product supports old SSL/TLS versions, potentially allowing an attacker to decrypt communications with the web server. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN,…

When was CVE-2025-66598 disclosed?

CVE-2025-66598 was first published in the National Vulnerability Database on February 9, 2026, with the most recent update on March 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-66598 actively exploited?

CVE-2025-66598 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-66598?

CVE-2025-66598 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2025-66598?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-66598, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2025-66598

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-66598?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)