CVE-2025-49113
HighExploitedPublic exploitRoundcube Webmail Vulnerable to Authenticated RCE via PHP Object Deserialization
Published Jun 2, 2025 · Updated Sep 17, 2026 · Also known as DEBIAN-CVE-2025-49113, DLA-4211-1, DSA-5934-1, GHSA-8j8w-wwqc-x596, UBUNTU-CVE-2025-49113, USN-7584-1
Key Facts
Patch immediately- CVE-2025-49113 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Webmail (Roundcube), Debian Linux, roundcube/roundcubemail (composer) and 6 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 4, 2025. Public exploit code is available.
- EPSS estimates a 99% probability of exploitation in the next 30 days.
- Fixed versions are available, including roundcube 1.2~beta+dfsg.1-0ubuntu1+esm6, roundcube 1.3.6+dfsg.1-1ubuntu0.1~esm5, roundcube 1.4.15+dfsg.1-1+deb11u5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
99%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-49113 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Feb 20, 2026 | Mar 13, 2026 | Not reported |
| Industry KEV feed | Jun 4, 2025 | Mar 13, 2026 | Not reported |
| CIRCL KEV | Feb 20, 2026 | Mar 13, 2026 | Not reported |
| ENISA EUVD | Feb 20, 2026 | n/a | Not reported |
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.
Affected Products
62 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WebmailRoundcube | >= 1.6.0 | 1.5.10 |
| Debian LinuxDebian | 11.0 | n/a |
| roundcube/roundcubemailcomposer | >= 1.6.0 | 1.6.11 |
| roundcubedebian | See advisory | 1.4.15+dfsg.1-1+deb11u5 |
| roundcube-coreubuntu | See advisory | 1.3.6+dfsg.1-1ubuntu0.1~esm5 |
Patched Releases
roundcube
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.15+dfsg.1-1+deb11u5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.11+dfsg-1, 1.6.5+dfsg-1+deb12u5, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
Webmail
1.5.10, 1.6.11
roundcube-core
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
roundcube-mysql
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
roundcube-pgsql
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
roundcube-plugins
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
roundcube-sqlite3
1.2~beta+dfsg.1-0ubuntu1+esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.6.10+dfsg-1ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1, 1.6.8+dfsg-2ubuntu0.1
roundcube/roundcubemail
1.5.10, 1.6.11
Timeline
Publicly disclosed
Jun 2, 2025
Added to Industry KEV feed
Jun 4, 2025
Added to CISA KEV
Feb 20, 2026
Added to CIRCL KEV
Feb 20, 2026
Added to ENISA EUVD
Feb 20, 2026
Last updated
Sep 17, 2026
Weakness Type
- CWE-502 Deserialization of Untrusted Data
References
- advisoryVulnCheck exploitation report
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49113.json
- advisoryhttps://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d
- advisoryhttps://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695
FAQ
Common Questions.
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: Webmail (Roundcube) versions >= 1.6.0; Debian Linux versions 11.0; roundcube/roundcubemail (composer) versions >= 1.6.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 4, 2025.
Yes. It was added on Feb 20, 2026 with a federal remediation due date of Mar 13, 2026.
Public exploit code is available.
Fixed versions are available, including roundcube 1.2~beta+dfsg.1-0ubuntu1+esm6, roundcube 1.3.6+dfsg.1-1ubuntu0.1~esm5, roundcube 1.4.15+dfsg.1-1+deb11u5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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