Anti-Malware Security and Brute-Force Firewall <= 4.21.96 — Unauthenticated Remote Code Execution
CVE-2024-22144Published · Updated Action summary
Affected: ≤4.21.96Update to 4.23.56 or newer
All remediation steps- Severity
- Critical9.0
- CVSS
- 9.0CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:NPrivileges required- None
UI:NUser interaction- None
S:CScope- Changed
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Anti-Malware Security and Brute-Force Firewall gotmls
- Affected≤ 4.21.96
- Patched in4.23.56
Update to 4.23.56 or newer.
You are affected if you run ≤ 4.21.96. Version 4.23.56 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Anti-Malware Security and Brute-Force Firewall.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 4.23.56, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Anti-Malware Security and Brute-Force Firewall to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to stealthcopter.
The Anti-Malware Security and Brute-Force Firewall plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.21.96 due to weak nonce generation combined with missing authorization. This makes it possible for unauthenticated attackers to brute force a valid nonce that can be used to add malware rule and execute code on the server.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Anti-Malware Security and Brute-Force Firewall
All 11| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤4.23.89Update to 4.23.90 | CVE-2026-57691 | |
| High7.5 | Authenticated (Contributor+) PHP Object Injection ≤4.23.87Update to 4.23.88 | CVE-2026-39478 | |
| Medium6.5 | Missing Authorization to Authenticated (Subscriber+) Arbitrary File Read ≤4.23.81Update to 4.23.83 | CVE-2025-11705 | |
| High7.2 | Authenticated (Admin+) PHP Object Injection ≤4.21.85Update to 4.21.86 | CVE-2022-4327 | |
| Medium6.1 | Reflected Cross-Site Scripting <4.20.96Update to 4.20.96 | CVE-2022-0953 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤4.23.89Update to 4.23.90
- High7.5Authenticated (Contributor+) PHP Object Injection
≤4.23.87Update to 4.23.88
- Medium6.5Missing Authorization to Authenticated (Subscriber+) Arbitrary File Read
≤4.23.81Update to 4.23.83
- High7.2Authenticated (Admin+) PHP Object Injection
≤4.21.85Update to 4.21.86
- Medium6.1Reflected Cross-Site Scripting
<4.20.96Update to 4.20.96
Timeline
CVE published
Severity critical, CVSS 9.0
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.