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W3Techs ↗ · as of 2 Nov 2026 · Medium confidence
Version split · W3Techs · as of 2 Nov 2026
CVE-2025-48827
Public exploit available. Not confirmed exploited in the wild yet. A vendor fix is available.
CVSS 3.110.0CriticalEPSS percentile99th76% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 1 sourceFixVendor fixNo build named by the sources
Public exploit: 1 sourceFixVendor fixNo build named by the sources
Check it yourself
Run the check e.g. vBulletin 5.0.0-6.0.3 - Authentication Bypass · OID 1.3.6.1.4.1.25623.1.0.119020
What to do
The vendor has published a fix. Version details are below where the sources state them.
- vBulletinAffected: ≥ 5.0.0, ≤ 5.7.5Upgrade to: after 5.7.5Affected: ≥ 6.0.0, ≤ 6.0.3Upgrade to: after 6.0.3Stated by: CVE record
- PHP Group PHPAffected: 8.1Upgrade to: not statedStated by: BDU
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
EPSS99th
Public exploit
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
1 source with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
76% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
The patch came 254 days before any public exploit.
- Analysis publishedvBulletin's Third Template-Engine RCE in 14 Months Now Has a Public Exploit — EPSS Already Says 70%
- OpenVAS check added
- Public exploit / PoCsource: other
- Nuclei check added
- Patch availablerecord updated
- Publishedweakness classified
Affected products
And 1 more affected product. See all after sign-in
Scale
How widely the affected products are used. This is not a count of vulnerable hosts.
Estimate Public sources, each figure dated. How much of it is already patched is not known.
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Scored 10.0 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
Analysis on the cve.tools blog
In the news
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