CASCACascade Atlas

Evidence dossier

CVE-2023-34048

VMware vCenter Server Out-of-Bounds Write Vulnerability

84.4–99.4Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.

State
PUBLISHED
Published
Oct 25, 2023
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

FIRST EPSS99.43%

2026-07-18 · v2026.06.15 · percentile 99.9%

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

CVEderivative copy
container

CVE Program Container

vmwareoriginal assertion
container

VMware vCenter Server Out-of-Bounds Write Vulnerability

CISA KEVoriginal assertion
observed_exploitation

VMware vCenter Server Out-of-Bounds Write Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.994280000000; percentile 0.999380000000

Applicability

Cited product scope

Trace impact →
vmwarecloud_foundation
[{"status": "affected", "version": "4.0", "lessThan": "KB88287", "versionType": "custom"}]unknown
vmwarecloud_foundation
[{"status": "affected", "version": "5.0", "lessThan": "KB88287", "versionType": "custom"}]unknown
vmwarevcenter_server
[{"status": "affected", "version": "7.0", "lessThan": "7.0U3o", "versionType": "custom"}]unknown
vmwarevcenter_server
[{"status": "affected", "version": "8.0", "lessThan": "8.0U2", "versionType": "custom"}]unknown
VMwareVMware Cloud Foundation (VMware vCenter Server)
[{"status": "affected", "version": "5.x"}, {"status": "affected", "version": "4.x"}]unknown
VMwareVMware vCenter Server
[{"status": "affected", "version": "8.0", "lessThan": "8.0U2", "versionType": "8.0U2"}, {"status": "affected", "version": "7.0", "lessThan": "7.0U3o", "versionType": "7.0U3o"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*; start including 4.0; end including 5.5supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update2b:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update2c:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update2d:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3c:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3d:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3e:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3f:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3g:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3h:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3i:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3j:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3k:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3l:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3m:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:7.0:update3n:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:b:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:c:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:update1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:update1a:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:update1b:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:vmware:vcenter_server:8.0:update1c:*:*:*:*:*:*supported

Assessments

CVSS by origin

9.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
security@vmware.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
vmwareCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.