CVE-2025-53691 PoC — Sitecore Experience Remote Code Execution through Insecure Deserialization

Source

https://github.com/brokendreamsclub/CVE-2025-53691

Associated Vulnerability

Title:Sitecore Experience Remote Code Execution through Insecure Deserialization (CVE-2025-53691)
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.

Description

Remote code execution (RCE) through insecure deserialization

Readme

### CVE-2025-53691: Remote code execution (RCE) through insecure deserialization

The same reflection mechanism in the `AjaxScriptManager` can be used to invoke the `ProcessSerializedData` method. This method deserializes a provided payload using the insecure `BinaryFormatter`, leading to RCE. An attacker can craft a malicious serialized object to execute arbitrary commands on the server.

**Remote Code Execution:** The attacker uses CVE-2025-53691 to execute arbitrary code on the server.

## Mitigation

Sitecore has released patches for this vulnerabilitie. It is strongly recommended to upgrade to the latest version of Sitecore XP or apply the provided security patches.

## Reference

[1] Watchtowr Labs. (2025). [*Cache Me If You Can: Sitecore Experience Platform Cache Poisoning to RCE*.](https://labs.watchtowr.com/cache-me-if-you-can-sitecore-experience-platform-cache-poisoning-to-rce/)

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