NST Labs Tech Nstbrowser up to 1.2.1 Local Agent Management Service stopAll stopAllBrowsers denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k1.48

Summaryinfo

A vulnerability described as problematic has been identified in NST Labs Tech Nstbrowser up to 1.2.1. The impacted element is the function stopAllBrowsers of the file /api/agent/browser/stopAll of the component Local Agent Management Service. Executing a manipulation can lead to denial of service. This vulnerability is handled as CVE-2026-122020. The attack can be executed remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in NST Labs Tech Nstbrowser up to 1.2.1 and classified as problematic. This vulnerability affects the function stopAllBrowsers of the file /api/agent/browser/stopAll of the component Local Agent Management Service. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The advisory is available at drive.google.com. This vulnerability was named CVE-2026-122020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/04/2026 Advisory disclosed
11/04/2026 +0 days VulDB entry created
11/04/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: drive.google.com
Status: Confirmed

CNA: VulDB
CVE: CVE-2026-122020 (🔒)

GCVE (CVE): GCVE-0-2026-122020
GCVE (VulDB): GCVE-100-431086
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/04/2026 15:42
Changes: 11/04/2026 15:42 (56)
Complete: 🔍
Submitter: wilson888
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1024994: https://www.nstbrowser.io/en nstbroswer 1.2.1 DDOS (by drive.google.com)

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