Is CVE-2025-53609 in the CISA KEV catalog?

No. CVE-2025-53609 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-53609?

CVE-2025-53609 has a CVSS v3 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2025-53609?

CVE-2025-53609 has an EPSS score of 8.37% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53609?

Upgrade fortiweb to 7.6.5 or later.

CVE & CISA-KEV Catalog

CVE-2025-53609

MEDIUMEPSS 94th pctl

4.9

CVSS v3

NVD

Description

A Relative Path Traversal vulnerability [CWE-23] in FortiWeb 7.6.0 through 7.6.4, 7.4.0 through 7.4.8, 7.2.0 through 7.2.11, 7.0.2 through 7.0.11 may allow an authenticated attacker to perform an arbitrary file read on the underlying system via crafted requests.

CWE-23

How to fix

Remediation Available

fortiwebNVD

Affected:>= 7.6.0, < 7.6.5Fixed in:7.6.5CVE-2025-53609derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

8.37%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.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 2025-09-10.