High severity · published Sep 3, 2025
CVE-2025-53691
Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Remote Code Execution (RCE).This issue affects…
8.8
CVSS
1.6%
EPSS
No
On KEV
Description
Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Remote Code Execution (RCE).This issue affects Experience Manager (XM): from 9.0 through 9.3, from 10.0 through 10.4; Experience Platform (XP): from 9.0 through 9.3, from 10.0 through 10.4.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EC
Experience Commerce · Sitecore
9.0 through 10.4 · source: NVD
EM
Experience Manager · Sitecore
9.0 through 10.4 · source: NVD
EP
Experience Platform · Sitecore
9.0 before 10.4; 10.4 · source: NVD
MC
Managed Cloud · Sitecore
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53691
Exploit
https://labs.watchtowr.com/cache-me-if-you-can-sitecore-experience-platform-cache-poisoning-to-rce/
Vendor Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667
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