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

Quick assessment

Affected
Sitecore Experience Manager (XM)
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sitecore Experience Manager（XM）是丹麦Sitecore公司的一个管理软件。 Sitecore Experience Manager 9.0至9.3版本和10.0至10.4版本和Sitecore Experience Platform 9.0至9.3版本和10.0至10.4版本存在安全漏洞，该漏洞源于反序列化不受信任数据，可能导致远程代码执行。

CVSS 8.8 · High EPSS 1.58% · P75

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-53691

Vulnerability Information
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Vulnerability Title
Sitecore Experience Remote Code Execution through Insecure Deserialization
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Sitecore Experience Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sitecore Experience Manager（XM）是丹麦Sitecore公司的一个管理软件。 Sitecore Experience Manager 9.0至9.3版本和10.0至10.4版本和Sitecore Experience Platform 9.0至9.3版本和10.0至10.4版本存在安全漏洞，该漏洞源于反序列化不受信任数据，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sitecore Experience Manager (XM) 9.0 ~ 9.3 -
Sitecore Experience Platform (XP) 9.0 ~ 9.3 -

II. Public POCs for CVE-2025-53691

# POC Description Source Link Shenlong Link
1 Remote code execution (RCE) through insecure deserialization https://github.com/blueisbeautiful/CVE-2025-53691 POC Details
2 Remote code execution (RCE) through insecure deserialization https://github.com/brokendreamsclub/CVE-2025-53691 POC Details
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III. Intelligence Information for CVE-2025-53691

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Vendor Advisories for CVE-2025-53691 (1)

Same Patch Batch · Sitecore · 2025-09-03 · 4 CVEs total

CVE-2025-53693 9.8 CRITICAL HTML Cache Poisoning through Unsafe Reflections
CVE-2025-53690 9.0 CRITICAL Sitecore Products ViewState Deserialization Vulnerability
CVE-2025-53694 7.5 HIGH Information Disclosure in ItemServices API

IV. Related Vulnerabilities

Same product: Experience Manager (XM)
Same vendor: Sitecore
Same weakness: CWE-502

V. Comments for CVE-2025-53691

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