Is CVE-2025-53690 actively exploited?

Yes. CVE-2025-53690 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2025-53690 be exploited remotely?

The attack vector of CVE-2025-53690 has not been classified yet.

What is the CVSS score of CVE-2025-53690?

CVE-2025-53690 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2025-53690

HIGHCISA KEVIN THE WILD

CVE-2025-53690

Published: September 4, 2025

EPSS:9.51%probability of exploitation in 30 daysPercentile:92.7th

Official 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.

NVD Source

CISA KEV Advisory

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

Added to KEV: 2025-09-04Federal patch deadline: 2025-09-25

Required Action (CISA)

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

Risk Analysis

Sitecore Experience Manager, Experience Platform, Experience Commerce, and Managed Cloud contain a deserialization of untrusted data vulnerability due to default machine keys. This flaw allows attackers to exploit exposed ASP.NET machine keys to achieve remote code execution. This high-severity vulnerability has a significant exploitation probability (EPSS 0.09508). This vulnerability is confirmed to be actively exploited by CISA.

This vulnerability is being actively exploited in the wild. It is remotely exploitable by leveraging exposed ASP.NET machine keys.

Recommended Action

Apply all available security updates for Sitecore products. Ensure that default machine keys are changed to unique, strong values and are not exposed.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-53690 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2025-53690 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.