How severe is CVE-2025-53609?

CVE-2025-53609 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-53609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53609?

CVE-2025-53609 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-53609 have an EU (EUVD) identifier?

Yes. CVE-2025-53609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27259.

When was CVE-2025-53609 published?

CVE-2025-53609 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-53609

CVE-2025-53609 is a medium-severity vulnerability in Fortinet Fortiweb with a CVSS 3.x base score of 4.9. 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-23.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27259
Weakness: CWE-23
Affected product: Fortinet Fortiweb
Published: 2025-09-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-53609?: 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.
How severe is CVE-2025-53609?: CVE-2025-53609 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-53609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53609?: CVE-2025-53609 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-53609 have an EU (EUVD) identifier?: Yes. CVE-2025-53609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27259.
When was CVE-2025-53609 published?: CVE-2025-53609 was published on 2025-09-09 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-512

Affected products (1)

cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

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