The kallyas theme for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4
Description
The kallyas theme for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4
AI Analyst Comment
Remediation
Update WordPress plugin/theme to the latest version. Review WordPress security settings and remove if no longer needed.
Executive Summary:
A critical Remote Code Execution (RCE) vulnerability, identified as CVE-2025-6990, has been discovered in the Kallyas theme for WordPress. This flaw allows an unauthenticated attacker to execute arbitrary code on the server, potentially leading to a complete compromise of the affected website, data theft, and further network intrusion.
Vulnerability Details
CVE-ID: CVE-2025-6990
Affected Software: WordPress Kallyas Theme
Affected Versions: All versions up to, and including, 4.0
Vulnerability: The Kallyas theme contains a flaw that fails to properly sanitize user-supplied input. An unauthenticated remote attacker can exploit this by sending a specially crafted request to a vulnerable component within the theme. Successful exploitation allows the attacker to execute arbitrary commands on the underlying server with the privileges of the web server process, leading to a full system compromise.
Business Impact
This vulnerability is rated as High severity with a CVSS score of 8.8. A successful exploit would grant an attacker complete control over the affected website and potentially the underlying server. The consequences include, but are not limited to, theft of sensitive data (customer information, payment details, intellectual property), website defacement, service disruption, and the use of the compromised server to launch further attacks or host malicious content. Such an incident could result in significant financial loss, reputational damage, and regulatory penalties.
Remediation Plan
Immediate Action:
Proactive Monitoring:
www-data,apache).Compensating Controls:
exec,shell_exec,passthru,system) in thephp.iniconfiguration file if they are not required for legitimate application functionality.Exploitation Status
Public Exploit Available: False
Analyst Notes:
As of November 1, 2025, there are no known public exploits or active attacks targeting this vulnerability. However, due to the high severity (CVSS 8.8) and the relative ease of exploitation for RCE vulnerabilities, it is highly probable that threat actors will develop and deploy exploits in the near future.
Analyst Recommendation
Given the high severity of this vulnerability, immediate patching is strongly recommended for all organizations using the affected Kallyas theme. While this vulnerability is not currently on CISA's Known Exploited Vulnerabilities (KEV) catalog, its critical nature makes it a prime candidate for future inclusion. Organizations must prioritize applying the vendor-supplied update to prevent a full system compromise. If patching is not immediately feasible, apply the recommended compensating controls and actively monitor for signs of exploitation.