CVE-2021-34413
7.5 · HIGHOverview
CVE-2021-34413 is a high-severity vulnerability affecting zoom zoom_plugin_for_microsoft_outlook. It was published on September 27, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
All versions of the Zoom Plugin for Microsoft Outlook for MacOS before 5.3.52553.0918 contain a Time-of-check Time-of-use (TOC/TOU) vulnerability during the plugin installation process. This could allow a standard user to write their own malicious application to the plugin directory, allowing the malicious application to execute in a privileged context.
Remediation
Check the references section for vendor advisories and patches from zoom. Update zoom_plugin_for_microsoft_outlook 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 |
|---|---|---|---|
| zoom | zoom_plugin_for_microsoft_outlook | >= 0, < 5.3.52553.0918 | Affected |
Frequently Asked Questions
What is CVE-2021-34413?
CVE-2021-34413 is a high-severity vulnerability affecting zoom zoom_plugin_for_microsoft_outlook. It was published on September 27, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-34413?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-34413?
Check the references section for vendor advisories and patches from zoom. Update zoom_plugin_for_microsoft_outlook 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-2021-34413?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-34413 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.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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