CVE-2025-53690

9.0

CRITICAL CVSS 3.1

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability - [Actively Exploited]

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.

INFO

Published Date :

Sept. 3, 2025, 8:15 p.m.

Last Modified :

Oct. 21, 2025, 11:17 p.m.

Remotely Exploit :

Yes !

Source :

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

CISA Notification

CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Due Date: Sep 25, 2025

Alert Date: Sep 04, 2025 | 55 days ago

Description :

Sitecore Experience Manager (XM), Experience Platform (XP), Experience Commerce (XC), and Managed Cloud contain a deserialization of untrusted data vulnerability involving the use of default machine keys. This flaw allows attackers to exploit exposed ASP.NET machine keys to achieve remote code execution.

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.

Notes :

https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53690

Affected Products

The following products are affected by CVE-2025-53690 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID	Vendor	Product
1	Sitecore	experience_platform
2	Sitecore	experience_manager
3	Sitecore	experience_commerce
4	Sitecore	managed_cloud

: Total Affected Vendor : 1 | Products : 4

CVSS Scores

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Score	Version	Severity	Vector	Exploitability Score	Impact Score	Source
	CVSS 3.1	CRITICAL				9947ef80-c5d5-474a-bbab-97341a59000e
	CVSS 3.1	CRITICAL				MITRE-CVE

Solution

Update Sitecore to a version that addresses the deserialization vulnerability.

Update Sitecore Experience Manager (XM) or Platform (XP).
Apply relevant security patches from Sitecore.
Validate the integrity of all deserialized data.

Public PoC/Exploit Available at Github

CVE-2025-53690 has a 6 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-53690.

URL	Resource
https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability	Exploit Third Party Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-53690 is associated with the following CWEs:

CWE-502: Deserialization of Untrusted Data

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-53690 weaknesses.

CAPEC-586: Object Injection Object Injection

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

m0d0ri205/CVE-2025-53690-Analysis

This is CVE-2025-53690 Analysis Documents.

Updated: 1 month, 3 weeks ago

1 stars 0 fork 0 watcher

Born at : Sept. 7, 2025, 3:20 a.m. This repo has been linked 1 different CVEs too.

B1ack4sh/Blackash-CVE-2025-53690

CVE-2025-53690

Updated: 1 month, 3 weeks ago

0 stars 0 fork 0 watcher

Born at : Sept. 5, 2025, 2:47 p.m. This repo has been linked 1 different CVEs too.

rxerium/CVE-2025-53690

Detection for CVE-2025-53690

cisa kev sitecore zeroday cve-2025-53690

Updated: 2 weeks, 1 day ago

4 stars 1 fork 1 watcher

Born at : Sept. 4, 2025, 7:53 p.m. This repo has been linked 1 different CVEs too.

optimak/sacr_agent

None

Dockerfile Python

Updated: 1 month, 3 weeks ago

0 stars 0 fork 0 watcher

Born at : Sept. 4, 2025, 2:55 a.m. This repo has been linked 1 different CVEs too.

rxerium/stars

A list of all of my starred repos, automated using Github Actions 🌟

github-actions stars

Updated: 4 weeks ago

0 stars 0 fork 0 watcher

Born at : Jan. 4, 2023, 11:20 a.m. This repo has been linked 25 different CVEs too.

nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 3 days, 19 hours ago

7345 stars 1210 fork 1210 watcher

Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 837 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

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