CVE-2013-3893 Microsoft Internet Explorer Resource Management Errors
Remote attackers can execute arbitrary code in Internet Explorer via crafted JavaScript strings exploiting a use-after-free flaw in mshtml.dll.
- Exploited in the wild
- Since 12 Aug 2025
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2013-3893?
CVE-2013-3893 is a high-severity use after free vulnerability in Microsoft Internet Explorer, published on 18 Sep 2013. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.
Weakness: CWE-416
Which versions are affected by CVE-2013-3893?
It affects 1 product.
Products include Microsoft Internet Explorer.
How do I fix CVE-2013-3893?
No fix has been published for CVE-2013-3893 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 2 Sep 2025.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2013-3893 being exploited?
Yes. Attackers have exploited CVE-2013-3893 in the wild since at least 12 Aug 2025.
Public exploit code: 1 Metasploit module and 2 Exploit-DB entries.
Other vulnerabilities in Microsoft Internet Explorer
- CVE-2014-1776 Microsoft Internet Explorer Memory Corruption
- CVE-2021-27085 Microsoft Internet Explorer Remote Code Execution
- CVE-2017-0222 Microsoft Internet Explorer Remote Code Execution
- CVE-2017-0210 Microsoft Internet Explorer Privilege Escalation
- CVE-2017-0149 Microsoft Internet Explorer Memory Corruption
Sources
Also known as GHSA-7jff-7vvq-8fxx.