CVE-2025-53690

Name: CVE-2025-53690
Creator: NVD / NIST
Published: 2025-09-03T20:15:33.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9/10Actively ExploitedEPSS 26.31%

Last modified Jun 17, 2026

CVE-2025-53690 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 26.31% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9/10

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

EPSS Probability

26.31%

97.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 25, 2025.

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Sitecore	Experience Commerce	<= 9.0
Sitecore	Experience Manager	<= 9.0
Sitecore	Experience Platform	<= 9.0
Sitecore	Managed Cloud	All versions

References

https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerabilityExploit, Third Party Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690US Government Resource

Timeline

Published: Sep 3, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-53690?

How severe is CVE-2025-53690?

CVE-2025-53690 has a CVSS score of 9/10 (CRITICAL severity). The EPSS model estimates a 26.31% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-53690?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-53690?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST