CASCACascade Atlas

Evidence dossier

CVE-2009-1123

CVE-2009-1123

62.4–78.9Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly validate changes to unspecified kernel objects, which allows local users to gain privileges via a crafted application, aka "Windows Kernel Desktop Vulnerability."

State
PUBLISHED
Published
Jun 10, 2009
Updated
Oct 22, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS4.92%

2026-07-18 · v2026.06.15 · percentile 91.1%

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

microsoftoriginal assertion
container

The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly validate changes to unspecified kernel objects, which allows local users to gain privileges via a crafted application, aka "Windows Kernel Desktop Vulnerability."

CISA KEVoriginal assertion
observed_exploitation

Microsoft Windows Improper Input Validation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.049180000000; percentile 0.911460000000

Applicability

Cited product scope

Trace impact →
n/an/a
[{"status": "affected", "version": "n/a"}]unknown
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:-:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*supported

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.2
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.