Latest Roundcube Webmail vulnerability #
A vulnerability has been disclosed in Roundcube Webmail stable versions from 1.5 prior to 1.5.10, and stable versions 1.6 prior to 1.6.11 that would allow a remote, authenticated attacker to perform remote code execution (RCE) due to deserialization of untrusted data. The _from parameter in a URL is not validated in program/actions/settings/upload.php, resulting in untrusted PHP Object Deserialization. This vulnerability has existed within the product for approximately 10 years.
This vulnerability has been designated CVE-2025-49113 and has a CVSS score of 9.9 (critical).
What is the impact? #
Successful exploitation of this vulnerability would allow an attacker to execute arbitrary code on the vulnerable system, potentially leading to complete system compromise.
Are any updates or workarounds available? #
Roundcube has released updates to mitigate this issue. Users are encouraged to update to the latest stable version as quickly as possible.
- For Roundcube Webmail stable version 1.5, update to version 1.5.10 or later.
- For Roundcube Webmail stable version 1.6, update to version 1.6.11 or later.
How do I find Roundcube Webmail installations with runZero? #
From the Service Inventory, use the following query to locate potentially impacted assets:
_asset.protocol:http AND protocol:http AND ((has:html.title AND html.title:="RoundCube%") OR (has:favicon.ico.image.md5 AND (favicon.ico.image.md5:="924a68d347c80d0e502157e83812bb23" OR favicon.ico.image.md5:="f1ac749564d5ba793550ec6bdc472e7c" OR favicon.ico.image.md5:="ef9c0362bf20a086bb7c2e8ea346b9f0")))About runZero
runZero, a network discovery and asset inventory solution, was founded in 2018 by HD Moore, the creator of Metasploit. HD envisioned a modern active discovery solution that could find and identify everything on a network–without credentials. As a security researcher and penetration tester, he often employed benign ways to get information leaks and piece them together to build device profiles. Eventually, this work led him to leverage applied research and the discovery techniques developed for security and penetration testing to create runZero.
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