CVE-2026-122020

Medium

Description

A security flaw has been discovered in NST Labs Tech Nstbrowser up to 1.2.1. The affected element is the function stopAllBrowsers of the file /api/agent/browser/stopAll of the component Local Agent Management Service. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

SeverityMedium
CVSS4.3
Exploit probability—
ProductNst Labs Tech Nstbrowser
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-404CWE-404

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
nst_labs_tech nstbrowser1.2.0, 1.2.1—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2026-122020 · Nst Labs Tech Nstbrowser · Dark Radar