Actively exploited · Published Jun 2, 2025 · Assigned by mitre
CVE-2025-49113
Critical 9.9 Exploited
In plain English
A critical-severity unsafe deserialization in Webmail from Roundcube. Attackers are actively exploiting it in the wild (listed by CISA on February 20, 2026). The chance it is exploited in the next 30 days is estimated at 99.5% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Fixed versions are available - upgrade the affected package.
CISA guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Mar 13, 2026.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | roundcube | 1.6.5+dfsg-1+deb12u5 | DSA-5934-1 |
| Debian:12 | roundcube | 1.6.5+dfsg-1+deb12u5 | DEBIAN-CVE-2025-49113 |
| Debian:13 | roundcube | 1.6.11+dfsg-1 | DEBIAN-CVE-2025-49113 |
| Debian:14 | roundcube | 1.6.11+dfsg-1 | DEBIAN-CVE-2025-49113 |
| Packagist | roundcube/roundcubemail | 1.5.10 | GHSA-8j8w-wwqc-x596 |
| Packagist | roundcube/roundcubemail | 1.6.11 | GHSA-8j8w-wwqc-x596 |
| Ubuntu:24.04:LTS | roundcube | 1.6.6+dfsg-2ubuntu0.1 | UBUNTU-CVE-2025-49113 |
| Ubuntu:24.04:LTS | roundcube | 1.6.6+dfsg-2ubuntu0.1 | USN-7584-1 |
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- 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
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113 government-resource
- http://www.openwall.com/lists/oss-security/2025/06/02/3
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.html