All vulnerabilities
CVE-2025-53690

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

Sitecore Multiple Products
Open in ThreatlineRecord JSON
CVSS
9.0Critical
ExploitationExploited in the wildAdded to KEV 4 Sep 2025CISA KEV
Exploit odds (EPSS)60.6%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Federal deadline25 Sep 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version.

Timeline

  1. 3 Sep 2025, 20:04 UTCPublishedCVE List
  2. 4 Sep 2025Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 2

  • Experience Manager (XM)affected: all versions through 9.0CVE List
  • Experience Platform (XP)affected: all versions through 9.0CVE List

References 4