CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Mar 13, 2026
Description
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.
EPSS — Exploit Probability
Higher than 99.6% of all CVEs
Required Action
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/1.6.11 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49113
Risk Assessment
HIGHDetails
- Severity
- High
- EPSS
- 90.4%
- CISA KEV
- Yes
- Ransomware
- Unknown
- Articles
- 1
Timeline
Published
Feb 20, 2026
Added to KEV
Feb 20, 2026
Remediation Due
Mar 13, 2026