How severe is CVE-2025-3603?

CVE-2025-3603 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-2025-3603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3603?

CVE-2025-3603 affects Flynax Flynax Bridge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3603?

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-2025-3603 have an EU (EUVD) identifier?

Yes. CVE-2025-3603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12124.

When was CVE-2025-3603 published?

CVE-2025-3603 was published on 2025-04-24 and last updated on 2026-06-17.

CVE-2025-3603

CVE-2025-3603 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-620.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12124
Weakness: CWE-620
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 password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.

Frequently asked questions

What is CVE-2025-3603?: 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 password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.
How severe is CVE-2025-3603?: CVE-2025-3603 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-2025-3603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3603?: CVE-2025-3603 affects Flynax Flynax Bridge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3603?: 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-2025-3603 have an EU (EUVD) identifier?: Yes. CVE-2025-3603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12124.
When was CVE-2025-3603 published?: CVE-2025-3603 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:*:*

More vulnerabilities in Flynax Flynax Bridge

CVE-2025-3604 — Critical (CVSS 9.8): The Flynax Bridge plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up…
CVE-2025-4179 — High (CVSS 7.3): The Flynax Bridge plugin for WordPress is vulnerable to limited Privilege Escalation due to a missing capability check…
CVE-2025-4177 — Medium (CVSS 5.3): The Flynax Bridge plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on…

All CVEs affecting Flynax Flynax Bridge →

Other CWE-620 vulnerabilities

CVE-2024-20419 — Critical (CVSS 10.0): A vulnerability in the authentication system of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an…
CVE-2025-1107 — Critical (CVSS 9.9): Unverified password change vulnerability in Janto, versions prior to r12. This could allow an unauthenticated attacker…
CVE-2024-33699 — Critical (CVSS 9.9): The LevelOne WBR-6012 router's web application has a vulnerability in its firmware version R0.40e6, allowing attackers…
CVE-2025-63362 — Critical (CVSS 9.8): Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage…
CVE-2025-9286 — Critical (CVSS 9.8): The Appy Pie Connect for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation due to missing…
CVE-2025-10159 — Critical (CVSS 9.8): An authentication bypass vulnerability allows remote attackers to gain administrative privileges on Sophos AP6 Series…

Browse all CWE-620 vulnerabilities →