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Fencer Intel
high 8.8

CVE-2012-4792 kev in the critical feed json

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code via a crafted web…

published 2012-12-30 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4717

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2024-07-23
epss
78.8%
EPSS 78.8% chance of exploitation in 30 days, percentile 99.5%
public exploits
3
Metasploit, Exploit-DB

Summary

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly allocated or (2) is deleted, as demonstrated by a CDwnBindInfo object, and exploited in the wild in December 2012.

Patch / fix

cisa required action The impacted product is end-of-life and should be disconnected if still in use.

Timeline

  1. First public exploit (Metasploit exploit/windows/browser/ie_cbutton_uaf)
  2. Published
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-08-13 (2 y ago)
Ransomware
Not known
Required action
The impacted product is end-of-life and should be disconnected if still in use.
Vendor, product
Microsoft, Internet Explorer
CISA name
Microsoft Internet Explorer Use-After-Free Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

78.82% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/windows/browser/ie_cbutton_uaf MS13-008 Microsoft Internet Explorer CButton Object Use-After-Free Vulnerability metasploit exploit, normal rank, 2012-12-27
  • EDB-23785 Microsoft Internet Explorer - CButton Object Use-After-Free (Metasploit) remote, 2013-01-02
  • EDB-23754 Microsoft Internet Explorer - CDwnBindInfo Object Use-After-Free (Metasploit) remote, 2012-12-31

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • microsoft ie

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.