CASCACascade Atlas

Evidence dossier

CVE-2026-59310

vCenter directory-traversal vulnerability

Exploited in the wild (CISA KEV since Aug 18, 2026). vmware reports CVSS 3.1 9.8. EPSS estimates 45.9% exploit likelihood as of Aug 27, 2026.

78.0–90.8Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

State
PUBLISHED
Published
Jul 30, 2026
Updated
Jul 30, 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
    vmware

    Record text: vCenter directory-traversal vulnerability

    Inspect raw assertion
    Field
    container
    Value
    vCenter directory-traversal vulnerability
    Original evidence ↗
  3. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Broadcom VMware vCenter Path Traversal Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Broadcom VMware vCenter Path Traversal Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 45.88% probability · 98.71th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.458780000000; percentile 0.987110000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Aug 18, 2026 · first observed Aug 18, 2026

Exploit likelihood45.88%

FIRST EPSS · score date Aug 27, 2026 · 98.7th percentile · first observed Aug 27, 2026

SeverityCVSS 9.8

vmware · CVSS 3.1 · first observed Aug 1, 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 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 assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 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
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 ↗
vmwareOriginal assertion
Record text

vCenter directory-traversal vulnerability

Inspect raw assertion
Field
container
Value
vCenter directory-traversal vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Broadcom VMware vCenter Path Traversal Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Broadcom VMware vCenter Path Traversal Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

45.88% probability · 98.71th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.458780000000; percentile 0.987110000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →

38 scope groups

vmware · source assertedVMwareCloud FoundationDirect source scope
Affected: 9.1.x.xAffected: 9.0.x.xAffected: 5.x
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "9.1.x.x"}, {"status": "affected", "version": "9.0.x.x"}, {"status": "affected", "version": "5.x"}]
vmware · source assertedVMwareTelco Cloud InfrastructureDirect source scope
Affected: 3.0
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "3.0"}]
vmware · source assertedVMwareTelco Cloud PlatformDirect source scope
Affected: 5.1.xAffected: 5.0.xAffected: 4.xAffected: 3.0
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "5.1.x"}, {"status": "affected", "version": "5.0.x"}, {"status": "affected", "version": "4.x"}, {"status": "affected", "version": "3.0"}]
vmware · source assertedVMwarevCenterDirect source scope
Affected: 9.1.x.x to before 9.1.0.0300 (custom comparison)Affected: 9.0.x.x to before 9.0.2.0100 (custom comparison)Affected: 8.0 to before 8.0 U3k (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "9.1.x.x", "lessThan": "9.1.0.0300", "versionType": "custom"}, {"status": "affected", "version": "9.0.x.x", "lessThan": "9.0.2.0100", "versionType": "custom"}, {"status": "affected", "version": "8.0", "lessThan": "8.0 U3k", "versionType": "custom"}]
vmware · source assertedVMwarevSphere FoundationDirect source scope
Affected: 9.1.x.xAffected: 9.0.x.x
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "9.1.x.x"}, {"status": "affected", "version": "9.0.x.x"}]
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:vmware:cloud_foundation:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:vmware:telco_cloud_infrastructure:3.0:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:vmware:telco_cloud_platform:*:*:*:*:*:*:*:*; start including 3.0; end including 5.2
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*; end excluding 8.0
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*; start including 9.0; end excluding 9.0.2.0100
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*; start including 9.1; end excluding 9.1.0.0300
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:-:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:a:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:b:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:c:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1a:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1b:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1c:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1d:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update1e:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update2:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update2a:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update2b:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:vmware:vcenter_server:8.0:update2c:*:*:*:*:*:*

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
5
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
2058b0ad-5dc7-41c3-a99e-c6ed4ace2c7f3a600a2d-1362-483d-bd2f-ac48253078064a2e9bb7-f075-4d1c-bf64-aae494d1ddf3699a1175-313e-4a3f-b785-f66e86f86102b7fce08d-d658-4851-b9ec-c645ee9f77e4
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
29
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0feb0f75-cf7c-4931-9ca0-ef242d40feee19aaa066-194a-47bc-9ad0-0c329877c4c61a71877c-8a51-49c7-bb86-eb5faa0712992c7873f2-9ea9-429f-85b2-aa8bb0be48b6441d6bce-9126-4f08-aacc-784b3fdfb5745a703e0a-e601-449e-94c7-c1410ac64e375b12853b-be27-4bc5-9c35-6923b7d77b265d4c1c45-f761-4db5-a217-f8137abe0c9b5de92880-7456-43bc-92a6-c911c491c79d5ea5b8d2-181f-4caf-9e2f-a7cd5697dd215fa857ee-43df-4ee5-bc9f-afa7faac666362dbf93c-dbc8-40bb-bef9-02af2466d60d6907d585-5554-4357-9361-8b5fed2f36d86d6444af-7972-430c-b4fa-31b02a97e0dd710e9cad-59ba-4b50-9cdc-2df58ad3e35b7fae5ec7-0a41-41e7-8e11-6b614aa3447883ba2906-863d-4e35-af55-92fd831ad6dd870a8b6d-efc7-4996-ab71-ca74732b5e898fcc4c8e-8f4f-425d-a2f9-6476802a4b90936cb36b-21d8-47c9-8a4d-2da16721227195a01c3c-7f22-4350-9a53-93a8d320fd7e9e3f1c7b-2d90-4184-b2a7-9f8e53a5c4aa9f2de8e5-4533-4d97-947a-5c3e80628c9ea9300871-f7c0-41a5-b0ae-e63dda4db6bfb8bc720d-2c94-4cf7-8341-7113ec422fe9bedcd860-f538-4aa7-a051-5beb6d0be08bdf179757-d406-43fd-bac2-0bf63089a687f3bc0a99-18ac-4d74-8b04-4ce43aaee7d1f6bcda95-8663-45d2-abc6-a57f55201a7a

Assessments

CVSS by origin

9.8
security@vmware.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
vmwareCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.8Priority eligible

vmware

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.8
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.