Home/CVE/Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) a
CVE

CVE-2025-53691

Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) a

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.

HIGH · CVSS 8.8 EPSS 0.05038
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

5
sitecore experience commerce>= 9.0 and <= 10.4
sitecore experience manager>= 9.0 and <= 10.4
sitecore experience platform>= 9.0 and < 10.4
sitecore experience platformall versions
sitecore managed cloudall versions
⚠

Public Exploits & PoCs

1
poclabs.watchtowr.com · cache-me-if-you-can-sitecore-experience-platform-cache-po...labs.watchtowr.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · 9947ef80-c5d5-474a-bbab-97341a59000e
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Sep 2025 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667Vendor Advisory
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