How severe is CVE-2025-59484?

CVE-2025-59484 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-59484 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59484?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-59484 have an EU (EUVD) identifier?

Yes. CVE-2025-59484 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30937.

When was CVE-2025-59484 published?

CVE-2025-59484 was published on 2025-09-23 and last updated on 2026-06-17.

CVE-2025-59484

CVE-2025-59484 is a high-severity vulnerability with a CVSS 3.x base score of 8.3. 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-327.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v4: 8.7
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-30937
Weakness: CWE-327
Published: 2025-09-23
Last modified: 2026-06-17

Description

The use of a broken or risky cryptographic algorithm was discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software uses an insecure implementation of the RSA encryption algorithm.

Frequently asked questions

What is CVE-2025-59484?: The use of a broken or risky cryptographic algorithm was discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software uses an insecure implementation of the RSA encryption algorithm.
How severe is CVE-2025-59484?: CVE-2025-59484 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-59484 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-59484?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-59484 have an EU (EUVD) identifier?: Yes. CVE-2025-59484 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30937.
When was CVE-2025-59484 published?: CVE-2025-59484 was published on 2025-09-23 and last updated on 2026-06-17.

References

Other CWE-327 (Use of a Broken or Risky Cryptographic Algorithm) vulnerabilities

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