CVE-2025-49113
RoundCube Webmail Deserialization of Untrusted Data Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
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.
CISA notes
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
Description
Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization.
Severity
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation Context
as of October 17, 2026- CISA added CVE-2025-49113 to the KEV catalog 263 days after its CVE record was published. The median for entries added in 2026 so far is 14 days.
- It is one of 11 Roundcube entries in the CISA KEV catalog, and one of 2 added in 2026.
- Its current EPSS score (99.0%) is higher than that of 87% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Roundcube | Roundcube Webmail | 0 to <1.5.10 1.6.0 to <1.6.11 |
References
12 Links- https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
- https://github.com/roundcube/roundcubemail/pull/9865
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
- https://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10
- https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695
- https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e
- https://fearsoff.org/research/roundcube
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detection
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script
- http://www.openwall.com/lists/oss-security/2025/06/02/3
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.html
Record Details
More from Roundcube
RoundCube Webmail Cross-Site Scripting Vulnerability
Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
Stored XSS vulnerability in Roundcube
RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability
Related
Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.