February 20, 2026 · Applied Cybernetics Group
CVE-2025-49113 Roundcube Webmail
RoundCube Webmail Deserialization of Untrusted Data Vulnerability
- Added to KEV
2026-02-20- Federal due date
2026-03-13- Vendor
- Roundcube
- Product
- Webmail
- EPSS
- 99.9th percentile (score 0.995, as of
2026-11-06) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-49113
CISA short 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.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.