CVE-2025-53690 CRITICAL

CVE-2025-53690: Sitecore Products ViewState Deserialization Vulnerability

Vendor Sitecore
Product Experience Manager (XM)
Weakness CWE-502 · Unsafe deserialization
KEV Status Known Exploited
Published September 3, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

9.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM): through 9.0; Experience Platform (XP): through 9.0.

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

September 3, 2025 CVE published
February 26, 2026 Record updated