How severe is CVE-2025-3604?

CVE-2025-3604 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-3604 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3604?

CVE-2025-3604 affects Flynax Flynax Bridge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3604?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-3604 have an EU (EUVD) identifier?

Yes. CVE-2025-3604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12128.

When was CVE-2025-3604 published?

CVE-2025-3604 was published on 2025-04-24 and last updated on 2026-06-17.

CVE-2025-3604

CVE-2025-3604 is a critical-severity vulnerability in Flynax Flynax Bridge with a CVSS 3.x base score of 9.8. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12128
Weakness: CWE-862
Affected product: Flynax Flynax Bridge
Published: 2025-04-24
Last modified: 2026-06-17

Description

The Flynax Bridge plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 2.2.0. This is due to the plugin not properly validating a user's identity prior to updating their details like email. This makes it possible for unauthenticated attackers to change arbitrary user's email addresses, including administrators, and leverage that to reset the user's password and gain access to their account.

Frequently asked questions

What is CVE-2025-3604?: The Flynax Bridge plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 2.2.0. This is due to the plugin not properly validating a user's identity prior to updating their details like email. This makes it possible for unauthenticated attackers to change arbitrary user's email addresses, including administrators, and leverage that to reset the user's password and gain access to their account.
How severe is CVE-2025-3604?: CVE-2025-3604 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-3604 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3604?: CVE-2025-3604 affects Flynax Flynax Bridge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3604?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-3604 have an EU (EUVD) identifier?: Yes. CVE-2025-3604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12128.
When was CVE-2025-3604 published?: CVE-2025-3604 was published on 2025-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flynax:flynax_bridge:*:*:*:*:*:wordpress:*:*

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