CVE-2007-2161

Name: CVE-2007-2161
Creator: NVD / NIST
Published: 2007-04-22T19:19:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 12.28%

Last modified Jun 16, 2026

CVE-2007-2161 is a vulnerability of currently unknown severity. Microsoft Internet Explorer 7 allows remote attackers to cause a denial of service (browser hang) via JavaScript that matches a regular expression against a long string, as demonstrated using /(.)*/.. EPSS estimates a 12.28% chance of exploitation in the next 30 days.

Description

Microsoft Internet Explorer 7 allows remote attackers to cause a denial of service (browser hang) via JavaScript that matches a regular expression against a long string, as demonstrated using /(.)*/.

Metrics

EPSS Probability

12.28%

95.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	7.0

References

http://osvdb.org/43314Broken Link
http://www.securityfocus.com/archive/1/466017/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/466043/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/466175/100/0/threadedThird Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/33715VDB Entry
http://osvdb.org/43314Broken Link
http://www.securityfocus.com/archive/1/466017/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/466043/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/466175/100/0/threadedThird Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/33715VDB Entry

Timeline

Published: Apr 22, 2007
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2007-2161?

Microsoft Internet Explorer 7 allows remote attackers to cause a denial of service (browser hang) via JavaScript that matches a regular expression against a long string, as demonstrated using /(.)*/.

How severe is CVE-2007-2161?

Severity scoring for CVE-2007-2161 is pending analysis. The EPSS model estimates a 12.28% probability of exploitation in the next 30 days.

How do I fix CVE-2007-2161?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2007-2161?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST