CVE-2021-30359

Harmony Browse vulnerability

CVSS

7.8

EPSS

3.9%

EPSS pct

89th

Exploited

No known

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 vendor

Checkpoint

Affected product

Harmony Browse

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-427 — Uncontrolled Search Path Element

Published

2021-10-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-30359

Confirm whether Checkpoint Harmony Browse is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-30359.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-30359

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