Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2012-2521

9.3 · HIGH

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "Asynchronous NULL Obj…

Published Aug 15, 2012microsoftCWE-94EPSS 20.87%

Overview

CVE-2012-2521 is a high-severity vulnerability affecting microsoft internet_explorer. It was published on August 15, 2012 and has a CVSS 2.0 base score of 9.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "Asynchronous NULL Object Access Remote Code Execution Vulnerability."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update internet_explorer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refwww.us-cert.gov/cas/techalerts/TA12-227A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15742Refwww.us-cert.gov/cas/techalerts/TA12-227A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15742

How CyberStrike helps

Frequently asked questions

What is CVE-2012-2521?

CVE-2012-2521 is a high-severity vulnerability affecting microsoft internet_explorer. It was published on August 15, 2012 and has a CVSS 2.0 base score of 9.3 (HIGH).

How severe is CVE-2012-2521?

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-2521?

Check the references section for vendor advisories and patches from microsoft. Update internet_explorer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-2521?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-2521 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2012

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999