CASCACascade Atlas

Evidence dossier

CVE-2025-53690

Sitecore Products ViewState Deserialization Vulnerability

73.6–88.6Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Sep 3, 2025
Updated
Feb 26, 2026
Evidence coverage
85%
CISA KEVCatalog member

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

FIRST EPSS30.81%

2026-07-18 · v2026.06.15 · percentile 98.0%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

Wizoriginal assertion
container

Sitecore Products ViewState Deserialization Vulnerability

CISA KEVoriginal assertion
observed_exploitation

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.308090000000; percentile 0.980450000000

Applicability

Cited product scope

Trace impact →
SitecoreExperience Manager (XM)
[{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "9.0"}]unknown
SitecoreExperience Platform (XP)
[{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "9.0"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:*; end including 9.0supported
Unknown vendorUnknown product
cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:*; end including 9.0supported
Unknown vendorUnknown product
cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:*; end including 9.0supported
Unknown vendorUnknown product
cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

9.0
9947ef80-c5d5-474a-bbab-97341a59000eCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.0
WizCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.