How severe is CVE-2025-53109?

CVE-2025-53109 has a CVSS 4.0 base score of 7.3, rated high severity.

Is CVE-2025-53109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53109?

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-2025-53109 have an EU (EUVD) identifier?

Yes. CVE-2025-53109 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19730.

When was CVE-2025-53109 published?

CVE-2025-53109 was published on 2025-07-02 and last updated on 2026-06-17.

CVE-2025-53109

CVE-2025-53109 is a high-severity vulnerability with a CVSS 4.0 base score of 7.3. 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-59.

Key facts

Severity: High (CVSS 4.0 base score 7.3)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19730
Weakness: CWE-59
Published: 2025-07-02
Last modified: 2026-06-17

Description

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.

Frequently asked questions

What is CVE-2025-53109?: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.
How severe is CVE-2025-53109?: CVE-2025-53109 has a CVSS 4.0 base score of 7.3, rated high severity.
Is CVE-2025-53109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-53109?: 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-2025-53109 have an EU (EUVD) identifier?: Yes. CVE-2025-53109 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19730.
When was CVE-2025-53109 published?: CVE-2025-53109 was published on 2025-07-02 and last updated on 2026-06-17.

References

Other CWE-59 (Improper Link Resolution Before File Access (Link Following)) vulnerabilities

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