Critical 10-Year Vulnerability in Roundcube Webmail Allows Code Execution by Authenticated Users
On June 3, 2025, cybersecurity researchers revealed a significant security flaw in Roundcube webmail software, active for a decade, that could enable authenticated users to execute malicious code on vulnerable systems. Classified as CVE-2025-49113, the vulnerability has a CVSS score of 9.9 out of 10, highlighting its severity. It involves post-authentication remote code execution through PHP object deserialization. According to the National Vulnerability Database (NVD), “Roundcube Webmail versions before 1.5.10 and 1.6.x prior to 1.6.11 allow authenticated users to execute remote code due to the lack of validation for the _from parameter in the URL in program/actions/settings/upload.php.” This flaw affects all versions up to and including 1.6.10 but has been patched in versions 1.6.11 and 1.5.10 LTS. The vulnerability was discovered and reported by Kirill Firsov, founder and CEO of FearsOff.
Critical Vulnerability in Roundcube Webmail Exposes Systems to Remote Code Execution On June 3, 2025, cybersecurity researchers revealed a significant security vulnerability in the Roundcube webmail software, a flaw that has remained undetected for a decade. This vulnerability has the…