What’s Vulnerable › Vulnerabilities

CVE-2021-30359

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-22 · updated 2026-06-17
• Weakness: CWE-427

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.

Affected products

• checkpoint Harmony Browse: before 90.08.7405 — fixed in 90.08.7405
• checkpoint Sandblast Agent For Browsers: before 90.08.7405 — fixed in 90.08.7405

How to fix

Upgrade to a fixed version: checkpoint Harmony Browse 90.08.7405; checkpoint Sandblast Agent For Browsers 90.08.7405. Check the vendor advisory for mitigations.

References

• https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0007/MNDT-2021-0007.md
• https://supportcontent.checkpoint.com/solutions?id=sk175968
• https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0007/MNDT-2021-0007.md
• https://supportcontent.checkpoint.com/solutions?id=sk175968

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