CVE-2025-4334
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
34.1%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The Simple User Registration plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3. This is due to insufficient restrictions on user meta values that can be supplied during registration. This makes it possible for unauthenticated attackers to register as an administrator.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 6/26/2025
- Last Modified
- 4/8/2026
Frequently Asked Questions
What is CVE-2025-4334?
The Simple User Registration plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3. This is due to insufficient restrictions on user meta values that can be supplied during registration. This makes it possible for unauthenticated attackers to register as an administrator.
Is CVE-2025-4334 actively exploited?
Active exploitation of CVE-2025-4334 has not been confirmed. The EPSS score is 34.1%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-4334?
CVE-2025-4334 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2025-4334 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.