How severe is CVE-2025-4041?

CVE-2025-4041 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2025-4041 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-4041?

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

Does CVE-2025-4041 have an EU (EUVD) identifier?

Yes. CVE-2025-4041 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13635.

When was CVE-2025-4041 published?

CVE-2025-4041 was published on 2025-05-06 and last updated on 2026-06-17.

CVE-2025-4041

CVE-2025-4041 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-798.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-13635
Weakness: CWE-798
Published: 2025-05-06
Last modified: 2026-06-17

Description

In Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330, an attacker could connect with the device's ssh server and utilize the system's components to perform OS command executions.

Frequently asked questions

What is CVE-2025-4041?: In Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330, an attacker could connect with the device's ssh server and utilize the system's components to perform OS command executions.
How severe is CVE-2025-4041?: CVE-2025-4041 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2025-4041 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-4041?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-4041 have an EU (EUVD) identifier?: Yes. CVE-2025-4041 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13635.
When was CVE-2025-4041 published?: CVE-2025-4041 was published on 2025-05-06 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-126-01

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