* [Blog](https://www2.paloaltonetworks.com/blog)
* [Palo Alto Networks](https://www2.paloaltonetworks.com/blog/corporate/)
* [Cybersecurity](https://www2.paloaltonetworks.com/blog/category/cybersecurity-2/)
* Palo Alto Networks Discov...

# Palo Alto Networks Discovers 4 Critical Internet Explorer Vulnerabilities

[](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww2.paloaltonetworks.com%2Fblog%2F2014%2F02%2Fpalo-alto-networks-discovers-4-critical-internet-explorer-vulnerabilities%2F)  
[](https://twitter.com/share?text=Palo+Alto+Networks+Discovers+4+Critical+Internet+Explorer+Vulnerabilities&url=https%3A%2F%2Fwww2.paloaltonetworks.com%2Fblog%2F2014%2F02%2Fpalo-alto-networks-discovers-4-critical-internet-explorer-vulnerabilities%2F)  
[](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww2.paloaltonetworks.com%2Fblog%2F2014%2F02%2Fpalo-alto-networks-discovers-4-critical-internet-explorer-vulnerabilities%2F&title=Palo+Alto+Networks+Discovers+4+Critical+Internet+Explorer+Vulnerabilities&summary=&source=)  
[](https://www.paloaltonetworks.com//www.reddit.com/submit?url=https://www2.paloaltonetworks.com/blog/2014/02/palo-alto-networks-discovers-4-critical-internet-explorer-vulnerabilities/&ts=markdown)  
\[\](mailto:?subject=Palo Alto Networks Discovers 4 Critical Internet Explorer Vulnerabilities)  
Link copied  
By [Scott Simkin](https://www.paloaltonetworks.com/blog/author/scott-simkin/?ts=markdown "Posts by Scott Simkin")  
Feb 11, 2014  
1 minutes  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-2/?ts=markdown)  
[Threat Advisories - Advisories](https://www.paloaltonetworks.com/blog/category/threat-advisories-advisories/?ts=markdown)  
[Bo Qu](https://www.paloaltonetworks.com/blog/tag/bo-qu/?ts=markdown)  
[IE](https://www.paloaltonetworks.com/blog/tag/ie/?ts=markdown)  
[internet explorer](https://www.paloaltonetworks.com/blog/tag/internet-explorer/?ts=markdown)  
[microsoft](https://www.paloaltonetworks.com/blog/tag/microsoft/?ts=markdown)  
[Microsoft Security Bulletin](https://www.paloaltonetworks.com/blog/tag/microsoft-security-bulletin/?ts=markdown)  
[Vulnerability](https://www.paloaltonetworks.com/blog/tag/vulnerability/?ts=markdown)

Palo Alto Networks researcher Bo Qu has discovered 4 new critical Internet Explorer (IE) vulnerabilities covering versions 8, 9, 10, and the latest, Internet Explorer 11.

Each of these discoveries allows full remote code execution using a memory corruption vulnerability in IE. They have been documented in Microsoft Security Bulletin [MS14-010](https://technet.microsoft.com/en-us/security/bulletin/ms14-010) and part of the February 2013 [Security Bulletin](http://technet.microsoft.com/en-us/security/bulletin/ms14-feb).

Details:

* Critical memory corruption vulnerability affecting Internet Explorer versions 8, 9 \& 10 (CVE-2014-0272)
* Critical memory corruption vulnerability affecting Internet Explorer versions 9, 10, 11 (CVE-2014-0273)
* Critical memory corruption vulnerability affecting Internet Explorer version 8 (CVE-2014-0278)
* Critical memory corruption vulnerability affecting Internet Explorer version 11 (CVE-2014-0290)

Palo Alto Networks customers are protected from these vulnerabilities through our regular Vulnerability Protection updates, and we recommend Internet Explorer users upgrade to the latest patch from Microsoft.

In our continuing commitment to the security research community, these vulnerabilities were disclosed to Microsoft through our participation in the [Microsoft Active Protections Program (MAPP)](http://technet.microsoft.com/en-us/security/dn467918) program, which ensures the timely, responsible disclosure of new vulnerabilities and creation of protections from security vendors.

Bo Qu's recent published discoveries also include [an IE vulnerability in December 2013](https://www.paloaltonetworks.com/blog/2013/12/palo-alto-networks-discovers-another-new-internet-explorer-vulnerability/), and [three IE vulnerabilities in November 2013](https://www.paloaltonetworks.com/blog/2013/11/palo-alto-networks-finds-critical-vulnerabilities-latest-version-internet-explorer/).

*** ** * ** ***

## Related Blogs

### [Unit 42](https://www.paloaltonetworks.com/blog/category/unit42/?ts=markdown)

[#### Unit 42 Vulnerability Research January 2018 Disclosures - Microsoft](https://www2.paloaltonetworks.com/blog/2018/01/unit42-unit-42-vulnerability-research-january-2018-disclosures-microsoft/)

### [Unit 42](https://www.paloaltonetworks.com/blog/category/unit42/?ts=markdown)

[#### Palo Alto Networks Unit 42 Vulnerability Research December 2017 Disclosures - Microsoft](https://www2.paloaltonetworks.com/blog/2017/12/unit42-palo-alto-networks-unit-42-vulnerability-research-december-2017-disclosures-microsoft/)

### [Unit 42](https://www.paloaltonetworks.com/blog/category/unit42/?ts=markdown)

[#### Palo Alto Networks Unit 42 Vulnerability Research November 2017 Disclosures](https://www2.paloaltonetworks.com/blog/2017/11/unit42-palo-alto-networks-unit-42-vulnerability-research-november-2017-disclosures/)

### [Unit 42](https://www.paloaltonetworks.com/blog/category/unit42/?ts=markdown)

[#### Palo Alto Networks Unit 42 Vulnerability Research August 2017 Disclosures](https://www2.paloaltonetworks.com/blog/2017/08/unit42-palo-alto-networks-unit-42-vulnerability-research-august-2017-disclosures/)

### [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-2/?ts=markdown)

[#### Palo Alto Networks News of the Week -- August 12, 2017](https://www2.paloaltonetworks.com/blog/2017/08/palo-alto-networks-news-week-august-12-2017/)

### [AI Governance](https://www.paloaltonetworks.com/blog/category/ai-governance/?ts=markdown), [AI Security](https://www.paloaltonetworks.com/blog/category/ai-security/?ts=markdown), [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-2/?ts=markdown), [Partners](https://www.paloaltonetworks.com/blog/category/partners/?ts=markdown)

[#### AI, Quantum Computing and Other Emerging Risks](https://www2.paloaltonetworks.com/blog/2025/10/ai-quantum-computing-emerging-risks/)

### Subscribe to the Blog!

Sign up to receive must-read articles, Playbooks of the Week, new feature announcements, and more.
![spinner](https://www2.paloaltonetworks.com/blog/wp-content/themes/panwblog2023/dist/images/ajax-loader.gif) Sign up  
Please enter a valid email.  
By submitting this form, you agree to our [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use?ts=markdown) and acknowledge our [Privacy Statement](https://www.paloaltonetworks.com/legal-notices/privacy?ts=markdown). Please look for a confirmation email from us. If you don't receive it in the next 10 minutes, please check your spam folder.  
This site is protected by reCAPTCHA and the Google [Privacy Policy](https://policies.google.com/privacy) and [Terms of Service](https://policies.google.com/terms) apply.  
{#footer} {#footer}

## Products and Services

* [AI-Powered Network Security Platform](https://www.paloaltonetworks.com/network-security?ts=markdown)

* [Secure AI by Design](https://www.paloaltonetworks.com/precision-ai-security/secure-ai-by-design?ts=markdown)

* [Prisma AIRS](https://www.paloaltonetworks.com/prisma/prisma-ai-runtime-security?ts=markdown)

* [AI Access Security](https://www.paloaltonetworks.com/sase/ai-access-security?ts=markdown)

* [Cloud Delivered Security Services](https://www.paloaltonetworks.com/network-security/security-subscriptions?ts=markdown)

* [Advanced Threat Prevention](https://www.paloaltonetworks.com/network-security/advanced-threat-prevention?ts=markdown)

* [Advanced URL Filtering](https://www.paloaltonetworks.com/network-security/advanced-url-filtering?ts=markdown)

* [Advanced WildFire](https://www.paloaltonetworks.com/network-security/advanced-wildfire?ts=markdown)

* [Advanced DNS Security](https://www.paloaltonetworks.com/network-security/advanced-dns-security?ts=markdown)

* [Enterprise Data Loss Prevention](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention?ts=markdown)

* [Enterprise IoT Security](https://www.paloaltonetworks.com/network-security/enterprise-device-security?ts=markdown)

* [Medical IoT Security](https://www.paloaltonetworks.com/network-security/medical-device-security?ts=markdown)

* [Industrial OT Security](https://www.paloaltonetworks.com/network-security/medical-device-security?ts=markdown)

* [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security?ts=markdown)

* [Next-Generation Firewalls](https://www.paloaltonetworks.com/network-security/next-generation-firewall?ts=markdown)

* [Hardware Firewalls](https://www.paloaltonetworks.com/network-security/hardware-firewall-innovations?ts=markdown)

* [Software Firewalls](https://www.paloaltonetworks.com/network-security/software-firewalls?ts=markdown)

* [Strata Cloud Manager](https://www.paloaltonetworks.com/network-security/strata-cloud-manager?ts=markdown)

* [SD-WAN for NGFW](https://www.paloaltonetworks.com/network-security/sd-wan-subscription?ts=markdown)

* [PAN-OS](https://www.paloaltonetworks.com/network-security/pan-os?ts=markdown)

* [Panorama](https://www.paloaltonetworks.com/network-security/panorama?ts=markdown)

* [Secure Access Service Edge](https://www.paloaltonetworks.com/sase?ts=markdown)

* [Prisma SASE](https://www.paloaltonetworks.com/sase?ts=markdown)

* [Application Acceleration](https://www.paloaltonetworks.com/sase/app-acceleration?ts=markdown)

* [Autonomous Digital Experience Management](https://www.paloaltonetworks.com/sase/adem?ts=markdown)

* [Enterprise DLP](https://www.paloaltonetworks.com/sase/enterprise-data-loss-prevention?ts=markdown)

* [Prisma Access](https://www.paloaltonetworks.com/sase/access?ts=markdown)

* [Prisma Browser](https://www.paloaltonetworks.com/sase/prisma-browser?ts=markdown)

* [Prisma SD-WAN](https://www.paloaltonetworks.com/sase/sd-wan?ts=markdown)

* [Remote Browser Isolation](https://www.paloaltonetworks.com/sase/remote-browser-isolation?ts=markdown)

* [SaaS Security](https://www.paloaltonetworks.com/sase/saas-security?ts=markdown)

* [AI-Driven Security Operations Platform](https://www.paloaltonetworks.com/cortex?ts=markdown)

* [Cloud Security](https://www.paloaltonetworks.com/cortex/cloud?ts=markdown)

* [Cortex Cloud](https://www.paloaltonetworks.com/cortex/cloud?ts=markdown)

* [Application Security](https://www.paloaltonetworks.com/cortex/cloud/application-security?ts=markdown)

* [Cloud Posture Security](https://www.paloaltonetworks.com/cortex/cloud/cloud-posture-security?ts=markdown)

* [Cloud Runtime Security](https://www.paloaltonetworks.com/cortex/cloud/runtime-security?ts=markdown)

* [Prisma Cloud](https://www.paloaltonetworks.com/prisma/cloud?ts=markdown)

* [AI-Driven SOC](https://www.paloaltonetworks.com/cortex?ts=markdown)

* [Cortex XSIAM](https://www.paloaltonetworks.com/cortex/cortex-xsiam?ts=markdown)

* [Cortex XDR](https://www.paloaltonetworks.com/cortex/cortex-xdr?ts=markdown)

* [Cortex XSOAR](https://www.paloaltonetworks.com/cortex/cortex-xsoar?ts=markdown)

* [Cortex Xpanse](https://www.paloaltonetworks.com/cortex/cortex-xpanse?ts=markdown)

* [Unit 42 Managed Detection \& Response](https://www.paloaltonetworks.com/cortex/managed-detection-and-response?ts=markdown)

* [Managed XSIAM](https://www.paloaltonetworks.com/cortex/managed-xsiam?ts=markdown)

* [Threat Intel and Incident Response Services](https://www.paloaltonetworks.com/unit42?ts=markdown)

* [Proactive Assessments](https://www.paloaltonetworks.com/unit42/assess?ts=markdown)

* [Incident Response](https://www.paloaltonetworks.com/unit42/respond?ts=markdown)

* [Transform Your Security Strategy](https://www.paloaltonetworks.com/unit42/transform?ts=markdown)

* [Discover Threat Intelligence](https://www.paloaltonetworks.com/unit42/threat-intelligence-partners?ts=markdown)

## Company

* [About Us](https://www.paloaltonetworks.com/about-us?ts=markdown)
* [Careers](https://jobs.paloaltonetworks.com/en/)
* [Contact Us](https://www.paloaltonetworks.com/company/contact-sales?ts=markdown)
* [Corporate Responsibility](https://www.paloaltonetworks.com/about-us/corporate-responsibility?ts=markdown)
* [Customers](https://www.paloaltonetworks.com/customers?ts=markdown)
* [Investor Relations](https://investors.paloaltonetworks.com/)
* [Location](https://www.paloaltonetworks.com/about-us/locations?ts=markdown)
* [Newsroom](https://www.paloaltonetworks.com/company/newsroom?ts=markdown)

## Popular Links

* [Blog](https://www.paloaltonetworks.com/blog/?ts=markdown)
* [Communities](https://www.paloaltonetworks.com/communities?ts=markdown)
* [Content Library](https://www.paloaltonetworks.com/resources?ts=markdown)
* [Cyberpedia](https://www.paloaltonetworks.com/cyberpedia?ts=markdown)
* [Event Center](https://events.paloaltonetworks.com/)
* [Manage Email Preferences](https://start.paloaltonetworks.com/preference-center)
* [Products A-Z](https://www.paloaltonetworks.com/products/products-a-z?ts=markdown)
* [Product Certifications](https://www.paloaltonetworks.com/legal-notices/trust-center/compliance?ts=markdown)
* [Report a Vulnerability](https://www.paloaltonetworks.com/security-disclosure?ts=markdown)
* [Sitemap](https://www.paloaltonetworks.com/sitemap?ts=markdown)
* [Tech Docs](https://docs.paloaltonetworks.com/)
* [Unit 42](https://unit42.paloaltonetworks.com/)
* [Do Not Sell or Share My Personal Information](https://panwedd.exterro.net/portal/dsar.htm?target=panwedd)
  ![PAN logo](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/pan-logo-dark.svg)
* [Privacy](https://www.paloaltonetworks.com/legal-notices/privacy?ts=markdown)
* [Trust Center](https://www.paloaltonetworks.com/legal-notices/trust-center?ts=markdown)
* [Terms of Use](https://www.paloaltonetworks.com/legal-notices/terms-of-use?ts=markdown)
* [Documents](https://www.paloaltonetworks.com/legal?ts=markdown)

Copyright © 2026 Palo Alto Networks. All Rights Reserved

* [![Youtube](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/youtube-black.svg)](https://www.youtube.com/user/paloaltonetworks)
* [![Podcast](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/icons/podcast.svg)](https://www.paloaltonetworks.com/podcasts/threat-vector?ts=markdown)
* [![Facebook](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/facebook-black.svg)](https://www.facebook.com/PaloAltoNetworks/)
* [![LinkedIn](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/linkedin-black.svg)](https://www.linkedin.com/company/palo-alto-networks)
* [![Twitter](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/social/twitter-x-black.svg)](https://twitter.com/PaloAltoNtwks)
* EN  
  Select your language