CVE-2021-30359

HIGH
7.8
CVSS Score
Published: October 22, 2021 at 01:32 PM UTC
Updated: June 17, 2026 at 03:50 AM UTC
2 products affected across 1 vendorHarmony BrowseSandblast Agent for Browsers· also runs on 1 platform

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Severity
HIGH7.8
Exploit prediction
EPSS 4%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 90.08.7405
Affected range stops below 90.08.7405, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
v < 90.08.7405
Affected range stops below 90.08.7405, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-427

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