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No exploitation reported

CVE-2012-4775

No exploitation reported by the sources we read.

  • Published2012-11-14
  • WeaknessCWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site, aka "CTreeNode Use After Free Vulnerability."

Timeline

dates in UTC
  1. 2012-11-1400:55CVE publishedNVD
  2. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2012-4775?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2012-4775?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microsoft internet explorerversion to verify
BranchAffectedFixed in
9.x= 9no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-01-16
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.18.82025-01-16
  • NVDCVSS 2.09.3read 2026-10-23
  • NVDweakness (CWE)CWE-399read 2026-10-23
  • FIRST EPSSEPSS score22.4 %read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2012-11-14
Last Modified
2026-06-16
NVD status
Modified

Frequently asked questions

What is CVE-2012-4775?

Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site, aka "CTreeNode Use After Free Vulnerability."

Is CVE-2012-4775 actively exploited?

Active exploitation of CVE-2012-4775 has not been confirmed. Its EPSS score was 22.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2012-4775?

CVE-2012-4775 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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