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CVE-2008-5556

4.3 · MEDIUM
Published Dec 12, 2008 microsoft CWE-79 EPSS 11.22% (96th pctl)

Overview

CVE-2008-5556 is a medium-severity vulnerability affecting microsoft internet_explorer. It was published on December 12, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

The XSS Filter in Microsoft Internet Explorer 8.0 Beta 2 does not recognize attack patterns designed to operate against web pages that are encoded with utf-7, which allows remote attackers to bypass the XSS protection mechanism and conduct XSS attacks by injecting crafted utf-7 content. NOTE: the vendor reportedly disputes this issue, stating "Behaviour is by design.

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

Vendor Product Versions Status

Frequently Asked Questions

What is CVE-2008-5556?

CVE-2008-5556 is a medium-severity vulnerability affecting microsoft internet_explorer. It was published on December 12, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2008-5556?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2008-5556?

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-2008-5556?

CyberStrike's AI-powered security agents can automatically detect CVE-2008-5556 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.