CASCACascade Atlas

Evidence dossier

CVE-2025-53690

Sitecore Products ViewState Deserialization Vulnerability

Exploited in the wild (CISA KEV since Sep 4, 2025). Wiz reports CVSS 3.1 9.0. EPSS estimates 60.6% exploit likelihood as of Oct 22, 2026.

78.1–85.5Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

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%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    Wiz

    Record text: Sitecore Products ViewState Deserialization Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Sitecore Products ViewState Deserialization Vulnerability
    Original evidence ↗
  3. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 60.6% probability · 99.15th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.606010000000; percentile 0.991460000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Sep 4, 2025 · first observed Sep 1, 2026

Exploit likelihood60.60%

FIRST EPSS · score date Oct 22, 2026 · 99.1th percentile · first observed Oct 22, 2026

SeverityCVSS 9.0

Wiz · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusLast verified source snapshot retained

The last verified source boundary remains in force for this claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
Review source contract
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Oct 22, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
WizOriginal assertion
Record text

Sitecore Products ViewState Deserialization Vulnerability

Inspect raw assertion
Field
container
Value
Sitecore Products ViewState Deserialization Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

60.6% probability · 99.15th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.606010000000; percentile 0.991460000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
4Underlying assertions
4Canonical products
4Target assertions
0Constraint assertions

Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

6 scope groups

Wiz · source assertedSitecoreExperience Manager (XM)Direct source scope
Affected: 0 through 9.0 (semver comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "9.0"}]
Wiz · source assertedSitecoreExperience Platform (XP)Direct source scope
Affected: 0 through 9.0 (semver comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "9.0"}]
NVD CPE · APPLICATIONsitecoreexperience_commerceVulnerable target · 1 assertions
Any version (unconstrained) (<= 9.0)Canonical identity product-b6d6965d22744acbd45f1a902202254ba557e96f28e5ca713665a62200ed6bcaLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 9.0
    Match ID
    40097ca2-94c2-4cbd-b94c-10b5a8f282fd
NVD CPE · APPLICATIONsitecoreexperience_managerVulnerable target · 1 assertions
Any version (unconstrained) (<= 9.0)Canonical identity product-0a5e27436190fd467a0b8029dc3a5d7f74ca6a826cc32a10b7c54bf4ade5262cLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    through including 9.0
    Match ID
    96c832b3-fb9d-443a-a501-65bff0a47092
NVD CPE · APPLICATIONsitecoreexperience_platformVulnerable target · 1 assertions
Any version (unconstrained) (<= 9.0)Canonical identity product-5723f393280ecafaf970bd18bfea026a6af546b72af1caf29873b558a234c74cLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    through including 9.0
    Match ID
    8f60edf8-6cce-4440-a4fb-337fbfc881dd
NVD CPE · APPLICATIONsitecoremanaged_cloudVulnerable target · 1 assertions
Version not applicableCanonical identity product-6736c39d55e72cb834f57ce75680ad6e33c30bb4af49c7e99cd6022cb8ca6233Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    520cf670-01a2-479f-b637-c413a82463e0

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 2 source-reported links

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
68546269-4c35-4d6f-a99a-e17603a79e61b3057d8f-9e58-4f6a-9d3f-056fdaa1b00c
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
0a404c7b-8f81-411c-8655-b158eeceace01bf2e2ce-a2a8-4e3c-a04c-1d32a2105b547a634bf3-e818-47fa-8656-70ad8f1f7c3195ff27cd-ad8e-4603-be8a-09dbd8076104

Assessments

CVSS by origin

9.0
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.0
WizCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.0Priority eligible

Wiz

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.0
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • 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; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • 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.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.