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CVE-2006-3431

7.5 · HIGH

Buffer overflow in certain Asian language versions of Microsoft Excel might allow user-assisted attackers to execute arbitrary code via a crafted STYLE record in a spreadsheet that triggers the ove…

Published Jul 7, 2006microsoftEPSS 28.32%

Overview

CVE-2006-3431 is a high-severity vulnerability affecting microsoft excel. It was published on July 7, 2006 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Buffer overflow in certain Asian language versions of Microsoft Excel might allow user-assisted attackers to execute arbitrary code via a crafted STYLE record in a spreadsheet that triggers the overflow when the user attempts to repair the document or selects the "Style" option, as demonstrated by nanika.xls. NOTE: Microsoft has confirmed to CVE via e-mail that this is different than the other Excel vulnerabilities announced before 20060707, including CVE-2006-3059 and CVE-2006-3086.

Remediation

Check the references section for vendor advisories and patches from microsoft. Update excel 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

Refmarc.info/?l=bugtraq&m=115274676314243&w=2Refsecunia.com/advisories/20268Refsecuritytracker.com/id?1016430Refwww.securityfocus.com/archive/1/438963/100/0/threadedRefwww.securityfocus.com/archive/1/439427/100/0/threadedRefwww.securityfocus.com/archive/1/449179/100/0/threadedRefwww.securityfocus.com/bid/18872Refwww.vupen.com/english/advisories/2006/2689Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-059Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A431

How CyberStrike helps

Frequently asked questions

What is CVE-2006-3431?

CVE-2006-3431 is a high-severity vulnerability affecting microsoft excel. It was published on July 7, 2006 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2006-3431?

This vulnerability has a CVSS 2.0 base score of 7.5, 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-2006-3431?

Check the references section for vendor advisories and patches from microsoft. Update excel 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-2006-3431?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-3431 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.

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