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Vulnerabilities

Vulnerability · CVE-2025-53690

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

Published Sep 3, 2025 · catalog updated Jun 17, 2026 · Sitecore Multiple Products

Patch now

CVE-2025-53690 is in the CISA known-exploited catalog, due Sep 25, 2025. Confirm Sitecore Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.0
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
60.60%
Remediation
Remediation guidance
Affected products
cpe sitecore/experience commerce · cpe sitecore/experience manager · cpe sitecore/experience platform · cpe sitecore/managed cloud · vendor Sitecore Multiple Products

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe sitecore/experience commerceversion unspecified
  • cpe sitecore/experience managerversion unspecified
  • cpe sitecore/experience platformversion unspecified
  • cpe sitecore/managed cloudversion unspecified
  • vendor Sitecore Multiple Productsversion unspecified

How to fix CVE-2025-53690

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-53690 is in the CISA known-exploited catalog, due Sep 25, 2025. Confirm Sitecore Multiple Products against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 60.60%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2025 · Catalog

    Detected

    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.

  2. Sep 4, 2025 · CISA KEV

    Known exploited

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

  3. Sep 25, 2025 · CISA KEV

    Remediation due

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

  4. Jun 17, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2025-53690

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-53690

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-53690

    30-day exploitation probability 60.6%

    first.org
  • NIST NVDVulnerability recordCVE-2025-53690

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-53690

    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 achie

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.