# CVE-2025-49113: RoundCube WebMail - RCE

> Live exploitation tracking for CVE-2025-49113 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2025-49113

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 9.9
- **Public exploit available:** Yes
- **Affected products:** RoundCube WebMail
- **Weaknesses:** CWE-502 (Deserialization of Untrusted Data)
- **Tags:** web_application

## Description

A PHP Object deserialization in RoundCube WebMail allows remote code execution. The vulnerability requires authentication.

## CrowdSec analysis

[CVE-2025-49113](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-49113) is a remote code execution vulnerability in Roundcube Webmail prior to versions 1.5.10 and 1.6.11, where improper validation of the _from parameter in the upload.php script allows authenticated users to exploit PHP object deserialization. Attackers leveraging this flaw could execute arbitrary code on the server, potentially leading to full system compromise and further attacks within the network.

CrowdSec has been tracking this vulnerability and its exploits since 9th of June 2025.

CrowdSec has not observed any significant exploitation activity targeting CVE-2025-49113 across its network. As a result, no community-driven trend analysis is available for this vulnerability at this time.

Attackers this vulnerability by passing specific values to the `_task` or the `_action` parameters and supplying a payload to `_from`.

## Timeline

- 2025-06-09: CVE Published. CVE-2025-49113 is published to NVD.
- 2025-06-09: Rule Released. CrowdSec releases a rule to detect CVE-2025-49113 exploitation attempts against the CrowdSec Network.
- 2025-12-17: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-49113 for the first time.
- 2026-02-20: CISA KEV. CVE-2025-49113 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2026-03-13: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).

## References

- https://fearsoff.org/research/roundcube
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-49113.yaml
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script
- https://github.com/roundcube/roundcubemail/pull/9865
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
- https://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d
- https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e
- 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-vulnerability-detection
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.html
- https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-49113) follows observed exploitation activity for CVE-2025-49113. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.