CVE-2025-49113 KEV EXPLOIT
9.9
CRITICAL · CVSS 3.1 · EPSS 98.9% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2026-03-13.
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.
Scoring
| CVSS | 9.9 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 98.9% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | yes — remediate by 2026-03-13 |
| Public exploit | yes |
| Published | 2025-06-02 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | RoundCube Webmail Deserialization of Untrusted Data Vulnerability |
|---|---|
| Added | 2026-02-20 |
| Due | 2026-03-13 |
| Vendor / product | Roundcube / Webmail |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| roundcube | webmail |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Roundcube 1.6.10 - Remote Code Execution (RCE) | 2025-06-13 |
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
- http://www.openwall.com/lists/oss-security/2025/06/02/3
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113
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