How severe is CVE-2025-66419?

CVE-2025-66419 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66419 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66419?

CVE-2025-66419 affects Maxkb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66419?

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-2025-66419 have an EU (EUVD) identifier?

Yes. CVE-2025-66419 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202922.

When was CVE-2025-66419 published?

CVE-2025-66419 was published on 2025-12-11 and last updated on 2026-06-17.

CVE-2025-66419

CVE-2025-66419 is a high-severity vulnerability in Maxkb with a CVSS 3.x base score of 8.8. 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 8.8)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202922
Weakness: CWE-362
Affected product: Maxkb
Published: 2025-12-11
Last modified: 2026-06-17

Description

MaxKB is an open-source AI assistant for enterprise. In versions 2.3.1 and below, the tool module allows an attacker to escape the sandbox environment and escalate privileges under certain concurrent conditions. This issue is fixed in version 2.4.0.

Frequently asked questions

What is CVE-2025-66419?: MaxKB is an open-source AI assistant for enterprise. In versions 2.3.1 and below, the tool module allows an attacker to escape the sandbox environment and escalate privileges under certain concurrent conditions. This issue is fixed in version 2.4.0.
How severe is CVE-2025-66419?: CVE-2025-66419 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66419 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66419?: CVE-2025-66419 affects Maxkb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66419?: 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-2025-66419 have an EU (EUVD) identifier?: Yes. CVE-2025-66419 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202922.
When was CVE-2025-66419 published?: CVE-2025-66419 was published on 2025-12-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:maxkb:maxkb:*:*:*:*:-:*:*:*

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