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Fencer Vulns
critical 9.9

CVE-2025-49113 kev in the critical feed json

Roundcube Webmail Vulnerable to Authenticated RCE via PHP Object Deserialization

published 2025-06-02 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-16605 , GHSA-8j8w-wwqc-x596

cvss
9.9
version 3.1, CNA
cisa kev
Exploited
added 2026-02-20
epss
99.5%
EPSS 99.5% chance of exploitation in 30 days, percentile 99.9%
public exploits
2
Metasploit, Exploit-DB, plus a Nuclei check

Summary

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.

Patch / fix

cisa 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.

  • packagist roundcube/roundcubemail 1.5.10, 1.6.11
  • Roundcube Webmail 1.5.10, 1.6.11
  • roundcube Debian 12 1.6.5+dfsg-1+deb12u5
  • roundcube Debian 14, Debian 13 1.6.11+dfsg-1

debian advisories DEBIAN-CVE-2025-49113

  • roundcube Ubuntu 24.04 LTS 1.6.6+dfsg-2ubuntu0.1
  • roundcube Ubuntu Pro 16.04 LTS 1.2~beta+dfsg.1-0ubuntu1+esm6
  • roundcube Ubuntu Pro 18.04 LTS 1.3.6+dfsg.1-1ubuntu0.1~esm5
  • roundcube Ubuntu Pro 20.04 LTS 1.4.3+dfsg.1-1ubuntu0.1~esm5
  • roundcube Ubuntu Pro 22.04 LTS 1.5.0+dfsg.1-2ubuntu0.1~esm4

ubuntu advisories UBUNTU-CVE-2025-49113

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • roundcubemail openSUSE Leap 16.0 1.6.20-bp160.1.1

opensuse advisories openSUSE-SU-2026:22195-1

  • roundcubemail Arch Linux 1.6.11-1

arch linux advisories AVG-2891

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-49113 updated cvss 9.9

roundcubemail: Remote Code Execution in Roundcube via Unvalidated _from Parameter

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/multi/http/roundcube_auth_rce_cve_2025_49113)
  3. CISA SSVC: exploitation active
  4. Added to CISA KEV
  5. CISA patch deadline

Known exploited

Added
8 mo ago
Patch by
2026-03-13 (7 mo ago)
Ransomware
Not known
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.
Vendor, product
Roundcube, Webmail
CISA name
RoundCube Webmail Deserialization of Untrusted Data Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
17 mo ago

Exploit prediction

99.49% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/multi/http/roundcube_auth_rce_cve_2025_49113 Roundcube Post-Auth RCE via PHP Object Deserialization metasploit exploit, excellent rank, 2025-06-02
  • EDB-52324 Roundcube 1.6.10 - Remote Code Execution (RCE) webapps, 2025-06-13
  • Nuclei template Roundcube Webmail - Remote Code Execution nuclei detection template
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detection referenced PoC, tagged "exploit" by a source, unverified
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist roundcube/roundcubemail
<1.5.10
>=1.6.0, <1.6.11
1.5.10
1.6.11

Affected products

  • Roundcube Webmail

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.