CVE-2025-49113
CISA KEVAs of 2026-02-23, CVE-2025-49113 is a CVSS 9.9 (CRITICAL-severity) vulnerability. CISA KEV-listed (known exploited). EPSS exploitation probability 91.6%. Threadlinqs Intelligence tracks 3 threats exploiting it.
Last updated: 2026-02-23
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.
CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses (CWE)
CWE-502
Exploitation status
CISA KEV-listed (known exploited)
Threats tracking this CVE
- UNK_MassTraction: China-Aligned Actor Exploits Roundcube CVE-2024-42009 & CVE-2025-49113 to Deploy IceCube Stealer and VShell Against University Physics Departments — HIGH
- UNK_MassTraction Exploits Roundcube XSS/Deserialization Flaws (CVE-2024-42009, CVE-2025-49113) to Spy on Academic Researchers — HIGH
- RoundCube Webmail Active Exploitation — CVE-2025-49113 Deserialization RCE (CVSS 9.9) + CVE-2025-68461 XSS via SVG Animate Tag (CISA KEV) — CRITICAL
References
- https://fearsoff.org/research/roundcube
- https://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d
- https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695
- https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e
- https://github.com/roundcube/roundcubemail/pull/9865
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
- https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detection
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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.