How severe is CVE-2025-64153?

CVE-2025-64153 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-64153 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64153?

CVE-2025-64153 affects Fortinet Fortiextender Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64153?

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-2025-64153 have an EU (EUVD) identifier?

Yes. CVE-2025-64153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202276.

When was CVE-2025-64153 published?

CVE-2025-64153 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2025-64153

CVE-2025-64153 is a high-severity vulnerability in Fortinet Fortiextender Firmware with a CVSS 3.x base score of 7.2. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202276
Weakness: CWE-78
Affected product: Fortinet Fortiextender Firmware
Published: 2025-12-09
Last modified: 2026-06-17

Description

A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.6.0 through 7.6.3, FortiExtender 7.4.0 through 7.4.7, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated attacker to execute unauthorized code or commands via a specific HTTP request.

Frequently asked questions

What is CVE-2025-64153?: A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.6.0 through 7.6.3, FortiExtender 7.4.0 through 7.4.7, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated attacker to execute unauthorized code or commands via a specific HTTP request.
How severe is CVE-2025-64153?: CVE-2025-64153 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-64153 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64153?: CVE-2025-64153 affects Fortinet Fortiextender Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64153?: 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-2025-64153 have an EU (EUVD) identifier?: Yes. CVE-2025-64153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202276.
When was CVE-2025-64153 published?: CVE-2025-64153 was published on 2025-12-09 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-739

Affected products (1)

cpe:2.3:o:fortinet:fortiextender_firmware:*:*:*:*:*:*:*:*

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