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Known Exploited Vulnerability
9.0
CRITICAL CVSS 3.1
CVE-2025-53690
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 :

Sept. 5, 2025, 1:48 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.

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 Action
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 8 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
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:

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.

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).

Profile Photo
m0d0ri205/CVE-2025-53690-Analysis

This is CVE-2025-53690 Analysis Documents.

Updated: 3 weeks, 5 days 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.
Profile Photo
B1ack4sh/Blackash-CVE-2025-53690

CVE-2025-53690

Updated: 4 weeks, 1 day 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.
Profile Photo
rxerium/CVE-2025-53690

Detection for CVE-2025-53690

cisa kev sitecore zeroday cve-2025-53690

Updated: 3 weeks, 5 days ago
3 stars 1 fork 1 watcher
Born at : Sept. 4, 2025, 7:53 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
optimak/sacr_agent

None

Dockerfile Python

Updated: 1 month 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.
Profile Photo
DevGreick/devgreick

None

Python

Updated: 1 week, 3 days ago
1 stars 0 fork 0 watcher
Born at : Oct. 29, 2024, 8:10 p.m. This repo has been linked 9 different CVEs too.
Profile Photo
rxerium/stars

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

github-actions stars

Updated: 4 days, 1 hour 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.
Profile Photo
felipealfonsog/felipealfonsog

Journey through the cryptic corridors of code. Unravel the secrets encoded in the shadows. Welcome to the realm where algorithms whisper in binary tongues. Dare to explore, for within lies the essence of innovation.

computer-architecture computer-engineering computer-science data-engineering research-and-development research-software-engineering software-engineering

Python Nix

Updated: 3 days, 9 hours ago
1 stars 0 fork 0 watcher
Born at : Aug. 8, 2020, 8:50 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

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

security cve exploit poc vulnerability

Updated: 1 week, 3 days ago
7289 stars 1207 fork 1207 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 821 different CVEs too.

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

The following list is the news that have been mention CVE-2025-53690 vulnerability anywhere in the article.

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Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-53690 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 05, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:* *cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:* versions up to (including) 9.0 *cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:* versions up to (including) 9.0 *cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:* versions up to (including) 9.0
    Added Reference Type Wiz: https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability Types: Exploit, Third Party Advisory
    Added Reference Type Wiz: https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 Types: Vendor Advisory
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 05, 2025

    Action Type Old Value New Value
    Added Date Added 2025-09-04
    Added Due Date 2025-09-25
    Added 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.
    Added Vulnerability Name Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
  • New CVE Received by 9947ef80-c5d5-474a-bbab-97341a59000e

    Sep. 03, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
    Added CWE CWE-502
    Added Reference https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability
    Added Reference https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.0
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact