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Vulnerabilities/CVE-2025-53691Public Intelligence Dossier
Source: sitecore · Limited verification•Last verified: •Collection Running
CVE-2025-53691Unknown / EvaluatingHIGH (raw)CVSS 8.8CWE-502

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.

Published: 03 Sept 2025•Last updated: 19 Oct 2026, 02:40 AM IST•Source identifier: 9947ef80-c5d5-474a-bbab-97341a59000e
Dossier completeness: source-provided sections 2 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
8.8HIGH (raw)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Metric source9947ef80-c5d5-474a-bbab-97341a59000e
EPSS probability
—
Percentile—
Weakness type
CWE-502
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

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.

SOC priority

High

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: SOC ecosystem technology relevance; HIGH severity

Affected Products & Remediation

4 source-backed products
Affected products and versions (source)
  • sitecore experience commerce · >= 9.0 <= 10.4 · NVD CPE · Source
  • sitecore experience manager · >= 9.0 <= 10.4 · NVD CPE · Source
  • sitecore experience platform · >= 9.0 < 10.4; 10.4 · NVD CPE · Source
  • sitecore managed cloud · version range not provided by source · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched deserialization (CWE-502)

Exposure

  1. Find installations of the affected component and confirm the source-stated version range.Telemetry: Application inventory · Deserialization risk requires component and version evidence. · Rule deserialization

Exploitation evidence

  1. Review unusual child processes or network connections from the affected service.Telemetry: DeviceProcessEvents · Unexpected behavior may support investigation but is not proof by itself. · Rule deserialization

Response

  1. Verify the vendor update or mitigation on each affected installation.Telemetry: Application change records · Response must follow the authoritative source guidance. · Rule deserialization

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
9947ef80-c5d5-474a-bbab-97341a59000e
Record status · verification
NEW · NVD API
CPE
cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:*, cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:*, cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:*, cpe:2.3:a:sitecore:experience_platform:10.4:-:*:*:*:*:*:*, cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:*

Evidence & Provenance

3 public sources
support.sitecore.comSource recordnvd.nist.govSource recordlabs.watchtowr.comSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2025-53691
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2025-53691
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2025-53691"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.