Home / Vulnerabilities / CVE-2025-49113
CRITICAL SEVERITY
CVE-2025-49113Roundcube · Webmail

RoundCube Webmail Deserialization of Untrusted Data Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.9 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

89.96 %
Predictive Probability
Percentile Rank
99.6 th

Documented as more likely to be exploited than 99.6% of known CVEs.

Detection Date

Feb 20, 2026

Remediation Due

Mar 13, 2026

CISA Catalog Active

Threat Analysis

RoundCube Webmail contains a deserialization of untrusted data vulnerability that allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

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

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

https://github.com/roundcube/roundcubemail/releases/tag/1.5.10

https://github.com/roundcube/roundcubemail/releases/tag/1.5.10

https://github.com/roundcube/roundcubemail/releases/tag/1.6.11

https://github.com/roundcube/roundcubemail/releases/tag/1.6.11

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-49113