How severe is CVE-2025-53845?

CVE-2025-53845 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2025-53845 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53845?

CVE-2025-53845 affects Fortinet Fortianalyzer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53845?

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

Does CVE-2025-53845 have an EU (EUVD) identifier?

Yes. CVE-2025-53845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34233.

When was CVE-2025-53845 published?

CVE-2025-53845 was published on 2025-10-14 and last updated on 2026-06-17.

CVE-2025-53845

CVE-2025-53845 is a medium-severity vulnerability in Fortinet Fortianalyzer with a CVSS 3.x base score of 6.5. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34233
Weakness: CWE-287
Affected product: Fortinet Fortianalyzer
Published: 2025-10-14
Last modified: 2026-06-17

Description

An improper authentication vulnerability [CWE-287] in Fortinet FortiAnalyzer version 7.6.0 through 7.6.3 and before 7.4.6 allows an unauthenticated attacker to obtain information pertaining to the device's health and status, or cause a denial of service via crafted OFTP requests.

Frequently asked questions

What is CVE-2025-53845?: An improper authentication vulnerability [CWE-287] in Fortinet FortiAnalyzer version 7.6.0 through 7.6.3 and before 7.4.6 allows an unauthenticated attacker to obtain information pertaining to the device's health and status, or cause a denial of service via crafted OFTP requests.
How severe is CVE-2025-53845?: CVE-2025-53845 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2025-53845 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53845?: CVE-2025-53845 affects Fortinet Fortianalyzer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53845?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-53845 have an EU (EUVD) identifier?: Yes. CVE-2025-53845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34233.
When was CVE-2025-53845 published?: CVE-2025-53845 was published on 2025-10-14 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-378

Affected products (1)

cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*

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