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Vulnerabilities

Vulnerability · CVE-2025-11521

The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and

Published Nov 11, 2025 · catalog updated Apr 8, 2026 · Astra Security Suite – Firewall & Malware Scan

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-11521. EPSS is 0.52%. Act only if a listed version of Astra Security Suite – Firewall & Malware Scan is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.52%
Remediation
Vendor / distro source
Affected products
vendor astrasecuritysuite Astra Security Suite – Firewall & Malware Scan 0 ≤0.2

The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor astrasecuritysuite Astra Security Suite – Firewall & Malware Scan 0 ≤0.20 ≤0.2

How to fix CVE-2025-11521

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-11521. EPSS is 0.52%. Act only if a listed version of Astra Security Suite – Firewall & Malware Scan is installed.

Which versions are affected?

Compare what you have installed with astrasecuritysuite Astra Security Suite – Firewall & Malware Scan 0 ≤0.2 0 ≤0.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 11, 2025 · EUVD

    Detected

    The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possibl

  2. Apr 8, 2026 · EUVD

    Updated

    The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possibl

Sources

  • CVE.orgVulnerability recordCVE-2025-11521

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-11521

    30-day exploitation probability 0.52%

    first.org
  • EUVDVulnerability recordEUVD-2025-60923

    The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauth

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgOct 24, 2026
  • EUVDOct 23, 2026