Authenticated code execution in Roundcube Webmail

1) Deserialization of Untrusted Data

EUVDB-ID: #VU110003

Risk: High

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2025-49113

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote authenticated user can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Roundcube: 1.5.0 - 1.6.10

CPE2.3

• cpe:2.3:a:roundcube:roundcube:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.6:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:roundcube:roundcube:1.5.9:*:*:*:*:*:*:*

External links

https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.