Microsoft · Internet Explorer
CVE-2012-4792
Microsoft Internet Explorer Use-After-Free Vulnerability
What it is
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.
CISA: Microsoft Internet Explorer contains a use-after-free vulnerability that allows a remote attacker 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.
What to do
The impacted product is end-of-life and should be disconnected if still in use.
Deadline for US federal agencies: August 13, 2024
- Added to the CISA list
- July 23, 2024
- Published
- December 30, 2012
- Severity
- High 8.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 79% in the top 0.4% of all known vulnerabilities
- Weakness
- CWE-416
- More details
- NVD · CVE.org · CISA
All references (13)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-008
- http://www.us-cert.gov/cas/techalerts/TA13-008A.html
- http://www.kb.cert.org/vuls/id/154201
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/ie_cbutton_uaf.rb
- http://labs.alienvault.com/labs/index.php/2012/just-another-water-hole-campaign-using-an-internet-explorer-0d…
- http://packetstormsecurity.com/files/119168/Microsoft-Internet-Explorer-CDwnBindInfo-Object-Use-After-Free.ht…
- http://eromang.zataz.com/2012/12/29/attack-and-ie-0day-informations-used-against-council-on-foreign-relations/
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16361
- http://www.us-cert.gov/cas/techalerts/TA13-015A.html
- http://blog.fireeye.com/research/2012/12/council-foreign-relations-water-hole-attack-details.html
- http://blogs.technet.com/b/srd/archive/2012/12/29/new-vulnerability-affecting-internet-explorer-8-users.aspx
- http://technet.microsoft.com/security/advisory/2794220
- http://blogs.technet.com/b/srd/archive/2012/12/31/microsoft-quot-fix-it-quot-available-for-internet-explorer-…
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| May 20, 2026 | Use-After-Free | Internet Explorer | High 8.8 | 92% |
| May 20, 2026 | Use-After-Free | Internet Explorer | High 8.8 | 82% |
| Oct 6, 2025 | Uninitialized Memory Corruption | Internet Explorer | High 8.1 | 97% |
| Aug 12, 2025 | Resource Management Errors | Internet Explorer | High 8.8 | 88% |
| Mar 30, 2023 | Memory Corruption | Internet Explorer | High 8.8 | 71% |
| Jun 8, 2022 | Use-After-Free | Internet Explorer | High 8.1 | 80% |
| May 25, 2022 | Information Disclosure | Internet Explorer | Medium 6.5 | 50% |
| May 25, 2022 | Privilege Escalation | Internet Explorer | High 8.8 | 26% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.