How severe is CVE-2025-3886?

CVE-2025-3886 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-3886 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3886?

CVE-2025-3886 affects Catonetworks Cato Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3886?

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-2025-3886 have an EU (EUVD) identifier?

Yes. CVE-2025-3886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12448.

When was CVE-2025-3886 published?

CVE-2025-3886 was published on 2025-04-27 and last updated on 2026-06-17.

CVE-2025-3886

CVE-2025-3886 is a high-severity vulnerability in Catonetworks Cato Client with a CVSS 3.x base score of 8.1. 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-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 5.7
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12448
Weakness: CWE-362
Affected product: Catonetworks Cato Client
Published: 2025-04-27
Last modified: 2026-06-17

Description

An issue in CatoNetworks CatoClient before v.5.8.0 allows attackers to escalate privileges and achieve a race condition (TOCTOU) via the PrivilegedHelperTool component.

Frequently asked questions

What is CVE-2025-3886?: An issue in CatoNetworks CatoClient before v.5.8.0 allows attackers to escalate privileges and achieve a race condition (TOCTOU) via the PrivilegedHelperTool component.
How severe is CVE-2025-3886?: CVE-2025-3886 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-3886 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3886?: CVE-2025-3886 affects Catonetworks Cato Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3886?: 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-2025-3886 have an EU (EUVD) identifier?: Yes. CVE-2025-3886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12448.
When was CVE-2025-3886 published?: CVE-2025-3886 was published on 2025-04-27 and last updated on 2026-06-17.

References

https://support.catonetworks.com/hc/en-us/articles/26903049677597-Security-Vulnerability-CVE-2025-3886-that-Impacts-macOS-Client-Versions-Lower-than-5-8

Affected products (1)

cpe:2.3:a:catonetworks:cato_client:*:*:*:*:*:macos:*:*

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