CASCACascade Atlas

Evidence dossier

CVE-2026-1603

An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

Exploited in the wild (CISA KEV since Mar 9, 2026). NVD reports CVSS 3.1 7.5. Severity assessments differ within at least one CVSS version. EPSS estimates 80.6% exploit likelihood as of Aug 26, 2026.

79.3–83.6Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

State
PUBLISHED
Published
Feb 10, 2026
Updated
Mar 10, 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
    ivanti

    Record text: An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

    Inspect raw assertion
    Field
    container
    Value
    An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.
    Original evidence ↗
  3. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 80.56% probability · 99.59th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.805600000000; percentile 0.995920000000
    Original evidence ↗

Assessments differ

NVD7.5CVSS 3.1 · source date omitted
CVE Program source8.6CVSS 3.1 · source date omitted

Values are shown separately by source and CVSS version.

ExploitationCatalog member

CISA KEV · catalog date Mar 9, 2026 · first observed Jul 19, 2026

Exploit likelihood80.56%

FIRST EPSS · score date Aug 26, 2026 · 99.6th percentile · first observed Aug 26, 2026

SeverityAssessments differ

NVD · CVSS 3.1 · first observed Jul 19, 2026 · values shown separately below

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentAssessments differ

Eligible assertions materially conflict and remain visible side by side.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
Resolve conflict
Affected productsSource-reported scope

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

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 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 ↗
ivantiOriginal assertion
Record text

An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

Inspect raw assertion
Field
container
Value
An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

80.56% probability · 99.59th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.805600000000; percentile 0.995920000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
8Underlying assertions
1Canonical products
8Target 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

2 scope groups

ivanti · source assertedIvantiEndpoint ManagerDirect source scope
Unaffected: 2024 SU5
Source-reported scope

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

Inspect raw assertion[{"status": "unaffected", "version": "2024 SU5"}]
NVD CPE · APPLICATIONivantiendpoint_managerVulnerable target · 8 assertions
Any version (unconstrained) (< 2024); Version 2024Canonical identity product-34b5a1ca1c26d9bb2b529f30cf3775ddf61d9a876434be275589746886c9d0d1Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:ivanti:endpoint_manager:2024:su1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    fc51eea2-1c4c-4069-9704-7acfe4773930
  2. cpe:2.3:a:ivanti:endpoint_manager:2024:su4:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4902a745-e7cb-4fc9-9bcb-89efab643237
  3. cpe:2.3:a:ivanti:endpoint_manager:2024:su4_security_release_1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9df8f788-0384-4e6b-844e-35ed79ca1f17
  4. cpe:2.3:a:ivanti:endpoint_manager:2024:su3_security_release_1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    698bf7a1-62a1-45b5-bf08-ab3f3aa0245c
  5. cpe:2.3:a:ivanti:endpoint_manager:2024:su3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    749aadda-834d-4ec0-b7ff-e136fd1984f7
  6. cpe:2.3:a:ivanti:endpoint_manager:2024:-:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    6c7283fe-c10a-4e37-b004-15fb0cac49a5
  7. cpe:2.3:a:ivanti:endpoint_manager:2024:su2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e1ef5e1b-9377-49d3-9be3-62fc78e666a3
  8. cpe:2.3:a:ivanti:endpoint_manager:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 2024
    Match ID
    7abde6fe-56cc-4a46-91f2-2f54c3ec6a75

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-3425119a96da358469a7b553eb78575943b212717ed69c8b19da50120e63cd05 · product-34b5a1ca1c26d9bb2b529f30cf3775ddf61d9a876434be275589746886c9d0d1

Source class
Nvd cpe vulnerable target
Assertions
8
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0f3e1f65-2135-41c8-8ac9-f2983424b9a71217d23a-ab9d-477a-b658-fdc04657e6938918ed9c-33c7-4566-916c-bb798f2fcb8eac599d76-e49d-40da-b2c9-924625baaf54cbbfab9f-7902-4dd9-beb8-2b62e7b64f8de0bdadfa-f856-4b2c-9780-1fabdf52870ae2076da9-55c9-4424-b3f3-95cbe13dad4aef2eac8f-b2a4-4a95-a0b7-d14b46855a58
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
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1da74ac8-ef79-48b0-ba2c-ef34d9b1c646

Assessments

CVSS by origin

7.5
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.6
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
8.6
ivantiCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Direct CVE/CNA normalized decisions

8.6Priority eligible

ivanti

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Validation
Valid match
Recomputed
8.6
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.