# CVE-2025-53691: Experience Manager (XM) - RCE

> Live exploitation tracking for CVE-2025-53691 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-2025-53691

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 8.8
- **Public exploit available:** Yes
- **Affected products:** Sitecore Experience Manager (XM), Sitecore Experience Platform (XP)
- **Weaknesses:** CWE-502 (Deserialization of Untrusted Data)

## Description

Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Remote Code Execution (RCE).This issue affects Experience Manager (XM): from 9.0 through 9.3, from 10.0 through 10.4; Experience Platform (XP): from 9.0 through 9.3, from 10.0 through 10.4.

## CrowdSec analysis

[CVE-2025-53691](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-53691) is a deserialization of untrusted data vulnerability in Sitecore Experience Manager (XM) and Experience Platform (XP), affecting versions 9.0 through 9.3 and 10.0 through 10.4. This flaw enables attackers with low privileges to achieve remote code execution (RCE), potentially allowing them to take full control of the affected system. Exploitation of this vulnerability could lead to severe compromise of confidentiality, integrity, and availability of the Sitecore environment.

CrowdSec has been tracking this vulnerability and its exploits since 4th of September 2025.

CrowdSec has not observed any significant exploitation activity targeting CVE-2025-53691 across its network. As a result, no community-driven trend analysis is available for this vulnerability at this time.

Attackers exploit the Sitecore deserialization vulnerability by sending crafted POST requests to URLs containing `/-/xaml/` with parameters such as `__SOURCE` and `__PARAMETERS` to trigger remote code execution via the AjaxScriptManager.

## Timeline

- 2025-09-03: CVE Published. CVE-2025-53691 is published to NVD.
- 2025-09-04: Rule Released. CrowdSec releases a rule to detect CVE-2025-53691 exploitation attempts against the CrowdSec Network.

## References

- https://labs.watchtowr.com/cache-me-if-you-can-sitecore-experience-platform-cache-poisoning-to-rce/
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667
- https://github.com/XiaomingX/data-cve-poc/blob/main/2025/CVE-2025-53691/exploit.py

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-53691) follows observed exploitation activity for CVE-2025-53691. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.