How severe is CVE-2025-48827?

CVE-2025-48827 has a CVSS 3.x base score of 10.0, 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-2025-48827 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48827?

CVE-2025-48827 affects Vbulletin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48827?

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-2025-48827 have an EU (EUVD) identifier?

Yes. CVE-2025-48827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28267.

When was CVE-2025-48827 published?

CVE-2025-48827 was published on 2025-05-27 and last updated on 2026-06-17.

CVE-2025-48827

CVE-2025-48827 is a critical-severity vulnerability in Vbulletin with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 70% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-424.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 70% (99th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-28267
Weakness: CWE-424
Affected product: Vbulletin
Published: 2025-05-27
Last modified: 2026-06-17

Description

vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.

Frequently asked questions

What is CVE-2025-48827?: vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.
How severe is CVE-2025-48827?: CVE-2025-48827 has a CVSS 3.x base score of 10.0, 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-2025-48827 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48827?: CVE-2025-48827 affects Vbulletin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48827?: 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-2025-48827 have an EU (EUVD) identifier?: Yes. CVE-2025-48827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28267.
When was CVE-2025-48827 published?: CVE-2025-48827 was published on 2025-05-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*

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