CVE-2026-122020
Deferred Deferred - Pending Action

Denial of Service in NST Labs Tech Nstbrowser

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: VulDB

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.

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Meta Information

Published
2026-11-04
Last Modified
2026-11-04
Generated
2026-11-05
AI Q&A
2026-11-05
EPSS Evaluated
N/A
NVD
CVE-2026-122020

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
NST Labs Tech Nstbrowser 1.2.0
NST Labs Tech Nstbrowser 1.2.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-404 The product does not release or incorrectly releases a resource before it is made available for re-use.

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Executive Summary

This vulnerability is a denial of service flaw in NST Labs Tech Nstbrowser up to version 1.2.1. It exists in the Local Agent Management Service, specifically in the stopAllBrowsers function of the /api/agent/browser/stopAll endpoint. An attacker can remotely exploit this to cause a denial of service by manipulating the function.

Impact Analysis

The vulnerability allows remote attackers to disrupt the availability of the Nstbrowser service by triggering a denial of service. This could lead to service unavailability for legitimate users, potential data loss, or operational disruptions if the affected system is critical.

Mitigation Strategies

Immediately update NST Labs Tech Nstbrowser to the latest version beyond 1.2.1 if available. If no update exists, disable the Local Agent Management Service or restrict network access to the /api/agent/browser/stopAll endpoint. Monitor network traffic for unusual activity targeting this service.

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