CVE-2025-49113

CVE-2025-49113 is a critical-severity vulnerability in Roundcube Webmail with a CVSS 3.x base score of 9.9. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-02-20). The underlying weakness is classified as CWE-502.

Key facts

• Severity: Critical (CVSS 3.x base score 9.9)
• EPSS exploit prediction: 89% (100th percentile)
• Actively exploited: Yes — listed in CISA KEV (added 2026-02-20)
• EU (EUVD) id: EUVD-2025-16605
• EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2026-02-20)
• Weakness: CWE-502
• Affected product: Roundcube Webmail
• Published: 2025-06-02
• Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-49113?

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.

How severe is CVE-2025-49113?

CVE-2025-49113 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-49113 being actively exploited?

Yes. CVE-2025-49113 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-02-20, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-49113?

CVE-2025-49113 primarily affects Roundcube Webmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-49113?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-49113 have an EU (EUVD) identifier?

Yes. CVE-2025-49113 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16605. It is also flagged as exploited in the EUVD (since 2026-02-20).

When was CVE-2025-49113 published?

CVE-2025-49113 was published on 2025-06-02 and last updated on 2026-06-17.

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

Affected products (2)

• cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

More vulnerabilities in Roundcube Webmail

• CVE-2008-5619 — Critical (CVSS 10.0): html2text.php in Chuggnutt HTML to Text Converter, as used in PHPMailer before 5.2.10, RoundCube Webmail…
• CVE-2024-37385 — Critical (CVSS 9.8): Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 on Windows allows command injection via im_convert_path and…
• CVE-2021-44026 — Critical (CVSS 9.8): Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params.
• CVE-2020-12641 — Critical (CVSS 9.8): rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters…
• CVE-2020-12640 — Critical (CVSS 9.8): Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a…
• CVE-2024-42009 — Critical (CVSS 9.3): A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to…

All CVEs affecting Roundcube Webmail →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

• CVE-2026-41104 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose…
• CVE-2026-43633 — Critical (CVSS 10.0): HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a…
• CVE-2026-33819 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
• CVE-2026-20131 — Critical (CVSS 10.0): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could…
• CVE-2026-25632 — Critical (CVSS 10.0): EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water…
• CVE-2025-14931 — Critical (CVSS 10.0): Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability.…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →