End of lifeInternet Explorer reached End of lifeThe vendor no longer ships security fixes. Remove or isolate the product instead of waiting for a patch. on 15 Jun 2022. No patch is coming: remove or isolate it.
SummaryAI-written · claude-haiku-5-5AI-written · claude-haiku-5-5Written by a language model from the source data on this page. Not reviewed by a person. Generated 23 Oct 2026.
A use-after-free flaw in the CMshtmlEd::Exec function of mshtml.dll, the rendering component of Microsoft Internet Explorer 6 through 9, allows memory to be accessed after it has been released. An remote attacker can execute arbitrary code by getting a victim to load a crafted web site, requiring no authentication but user interaction to visit the page.
Official description · NVDSource dataSource dataCopied from an authoritative feed: NVD, CVE.org, CISA KEV, FIRST EPSS or MITRE CTID mappings, or labelled by the annotators of a published dataset. Copied from NVD.
Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attackers to execute arbitrary code via a crafted web site, as exploited in the wild in September 2012.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown.Breakdown
57.5 / 100
Exploited
Yes, in CISA KEV
Reports
1
Tactics
0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited the day it was disclosed. Public exploit code (Metasploit) was available 4 days before disclosure.
CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linked
No high- or medium-confidence techniques. The 2 available links are lower confidence and listed below.
Lower-confidence links (2)
These come from early or generic mappings, text matching, or contradict this CVE’s details (for example a public-facing technique on a bug that needs a user to open a file). Shown for completeness.
Drive-by CompromiseT1189AIAI-writtenWritten by a language model from the source data on this page. Not reviewed by a person. claude-haiku-5-5: Malicious website delivers exploit to browser.server-side bug exploitable without user interaction; client-execution technique does not fit
Exploitation for Client ExecutionT1203AIAI-writtenWritten by a language model from the source data on this page. Not reviewed by a person. claude-haiku-5-5: Memory corruption yields code execution in client app.server-side bug exploitable without user interaction; client-execution technique does not fit
What security researchers reported
Named in 1 threat reportMachineMachine-matchedFound by keyword or pattern matching over threat-report text. Not reviewed by a person. Exact CVE id found in the report text.
1 reportUnit 42Jan 2016
Reports are matched by finding the exact id CVE-2012-4969 in their text; nobody has reviewed the match. One passage is shown per report, at most 320 characters, linked to the original.
According to a blog by Websense, threat actors compromised the Tibetan Alliance of Chicago’s website to host malicious code that exploited a vulnerability in Internet Explorer (CVE-2012-4969.)