CASCACascade Atlas

Evidence dossier

CVE-2010-0249

CVE-2010-0249

81.2–97.4Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."

State
PUBLISHED
Published
Jan 15, 2010
Updated
May 21, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS91.88%

2026-07-18 · v2026.06.15 · percentile 99.8%

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

Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."

CISA KEVoriginal assertion
observed_exploitation

Microsoft Internet Explorer Use-After-Free Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.918850000000; percentile 0.998060000000

Applicability

Cited product scope

Trace impact →
n/an/a
[{"status": "affected", "version": "n/a"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:5.0.1:sp4:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:6:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:6:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:7.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:itanium:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:itanium:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:itanium:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:*:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_vista:-:*:*:*:-:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*constrained

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/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.