Is CVE-2025-64157 in the CISA KEV catalog?

No. CVE-2025-64157 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-64157?

CVE-2025-64157 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2025-64157?

CVE-2025-64157 has an EPSS score of 1.36% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-64157?

Upgrade fortios to 7.6.5 or later.

CVE & CISA-KEV Catalog

CVE-2025-64157

MEDIUM

6.7

CVSS v3

NVD

Description

A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0 all versions allows an authenticated admin to execute unauthorized code or commands via specifically crafted configuration.

CWE-134

How to fix

Remediation Available

fortiosNVD

Affected:>= 7.6.0, < 7.6.5Fixed in:7.6.5CVE-2025-64157derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.36%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.com

Other references1

cert-portal.siemens.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-12.