CVE-2021-30359
7.8 · HIGHOverview
CVE-2021-30359 is a high-severity vulnerability affecting checkpoint harmony_browse. It was published on October 22, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
The Harmony Browse and the SandBlast Agent for Browsers installers must have admin privileges to execute some steps during the installation. Because the MS Installer allows regular users to repair their installation, an attacker running an installer before 90.08.7405 can start the installation repair and place a specially crafted binary in the repair folder, which runs with the admin privileges.
Remediation
Check the references section for vendor advisories and patches from checkpoint. Update harmony_browse 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 |
|---|---|---|---|
| checkpoint | harmony_browse | >= 0, < 90.08.7405 | Affected |
| checkpoint | sandblast_agent_for_browsers | >= 0, < 90.08.7405 | Affected |
References
Frequently Asked Questions
What is CVE-2021-30359?
CVE-2021-30359 is a high-severity vulnerability affecting checkpoint harmony_browse. It was published on October 22, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-30359?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-30359?
Check the references section for vendor advisories and patches from checkpoint. Update harmony_browse 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-2021-30359?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-30359 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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