CVE-2025-49113
RoundCube Webmail Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 13 March 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.49% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 13 June 2025
- CISA KEV
- Listed 20 February 2026 · due 13 March 2026
- Weakness
- CWE-502
- Affected
- roundcube/webmail · debian/debian linux
- Source
- cve@mitre.org
EPSS 99.5% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. 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
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://fearsoff.org/research/roundcubeThird Party Advisory
- https://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4dPatch
- https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695Patch
- https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637ePatch
- https://github.com/roundcube/roundcubemail/pull/9865Issue Tracking
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11Release Notes
- https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10Vendor Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-scriptExploit, Mitigation, Third Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detectionExploit, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2025/06/02/3Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.htmlMailing List, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.