CVE-2025-53690

9.0 CRITICAL CISA KEV - Actively Exploited

Published: September 03, 2025 Modified: October 30, 2025

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability

Source: 9947ef80-c5d5-474a-bbab-97341a59000e

Exploit Third Party Advisory

https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865

Source: 9947ef80-c5d5-474a-bbab-97341a59000e

Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.0 / 10.0

EPSS (Exploit Probability)

7.4%

91th percentile

Exploitation Status

Actively Exploited

Remediation due: 2025-09-25

Weaknesses (CWE)

CWE-502

Affected Vendors

sitecore

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