What is the severity of CVE-2010-1991?

CVE-2010-1991 is considered a denial of service vulnerability affecting specific versions of Microsoft Internet Explorer.

How does CVE-2010-1991 exploit work?

CVE-2010-1991 exploits the IFRAME element with a mailto: URL, causing excessive application launches when rendered in the browser.

What versions of Internet Explorer are affected by CVE-2010-1991?

CVE-2010-1991 affects Microsoft Internet Explorer versions 6, 7, and 8.0.7600.16385.

How do I mitigate CVE-2010-1991?

To mitigate CVE-2010-1991, consider upgrading to a more recent version of Internet Explorer or apply security patches provided by Microsoft.

Is there a workaround for CVE-2010-1991?

A potential workaround for CVE-2010-1991 is to disable the use of scripts and IFRAME elements in untrusted web content.

Vulnerability/
CVE-2010-1991

medium

CWE

399

20/5/2010

11/4/2025

CVE-2010-1991

First published: Thu May 20 2010(Updated: )

Microsoft Internet Explorer 6.0.2900.2180, 7, and 8.0.7600.16385 executes a mail application in situations where an IFRAME element has a mailto: URL in its SRC attribute, which allows remote attackers to cause a denial of service (excessive application launches) via an HTML document with many IFRAME elements.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Microsoft Internet Explorer	=8.0.7600.16385
Internet Explorer	=6.0.2900.2180
Internet Explorer	=7
Internet Explorer	=7.0
	=8.0.7600.16385
	=6.0.2900.2180
	=7
	=7.0

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2010-1991?
CVE-2010-1991 is considered a denial of service vulnerability affecting specific versions of Microsoft Internet Explorer.
How does CVE-2010-1991 exploit work?
CVE-2010-1991 exploits the IFRAME element with a mailto: URL, causing excessive application launches when rendered in the browser.
What versions of Internet Explorer are affected by CVE-2010-1991?
CVE-2010-1991 affects Microsoft Internet Explorer versions 6, 7, and 8.0.7600.16385.
How do I mitigate CVE-2010-1991?
To mitigate CVE-2010-1991, consider upgrading to a more recent version of Internet Explorer or apply security patches provided by Microsoft.
Is there a workaround for CVE-2010-1991?
A potential workaround for CVE-2010-1991 is to disable the use of scripts and IFRAME elements in untrusted web content.

agent/references
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collector/mitre-cve
source/MITRE
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vendor/microsoft
canonical/microsoft internet explorer
version/microsoft internet explorer/8.0.7600.16385
canonical/internet explorer
version/internet explorer/6.0.2900.2180
version/internet explorer/7
version/internet explorer/7.0

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