How severe is CVE-2025-66204?

CVE-2025-66204 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66204?

CVE-2025-66204 affects Wbce Wbce Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66204?

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-2025-66204 have an EU (EUVD) identifier?

Yes. CVE-2025-66204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201840.

When was CVE-2025-66204 published?

CVE-2025-66204 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2025-66204

CVE-2025-66204 is a high-severity vulnerability in Wbce Wbce Cms with a CVSS 3.x base score of 8.1. 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-307.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 6.3
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201840
Weakness: CWE-307
Affected product: Wbce Wbce Cms
Published: 2025-12-09
Last modified: 2026-06-17

Description

WBCE CMS is a content management system. Version 1.6.4 contains a brute-force protection bypass where an attacker can indefinitely reset the counter by modifying `X-Forwarded-For` on each request, gaining unlimited password guessing attempts, effectively bypassing all brute-force protection. The application fully trusts the `X-Forwarded-For` header without validating it or restricting its usage. This issue is fixed in version 1.6.5.

Frequently asked questions

What is CVE-2025-66204?: WBCE CMS is a content management system. Version 1.6.4 contains a brute-force protection bypass where an attacker can indefinitely reset the counter by modifying `X-Forwarded-For` on each request, gaining unlimited password guessing attempts, effectively bypassing all brute-force protection. The application fully trusts the `X-Forwarded-For` header without validating it or restricting its usage. This issue is fixed in version 1.6.5.
How severe is CVE-2025-66204?: CVE-2025-66204 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66204?: CVE-2025-66204 affects Wbce Wbce Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66204?: 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-2025-66204 have an EU (EUVD) identifier?: Yes. CVE-2025-66204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201840.
When was CVE-2025-66204 published?: CVE-2025-66204 was published on 2025-12-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wbce:wbce_cms:*:*:*:*:*:*:*:*

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