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CVE-2026-122020NST Labs Tech Nstbrowser Local Agent Management Service stopAll stopAllBrowsers denial of service
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.
5.3 MEDIUMEPSS 0.31%Not in KEVNVD: Deferred
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 5.3 | MEDIUM | 4.0VulDB (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P |
| 2.1 | LOW | 4.0VulDB (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P |
| 4.3 | MEDIUM | 3.1VulDB (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| 4.3 | MEDIUM | 3.1VulDB (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RC:C |
| 4.3 | MEDIUM | 3.0VulDB (CNA) | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RC:C |
| 5.0 | MEDIUM | 2.0VulDB (CNA) | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| 5.0 | MEDIUM | 2.0VulDB (CNA) | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:C |
Details
- CVE ID
- CVE-2026-122020
- Status
- Deferred
- Assigner (CNA)
- VulDB
- Published
- Nov 4, 2026
- Last modified
- 2026-11-06 09:07 UTC
- Weaknesses
- CWE-404 · Denial of Service
Affected Products
As published by the CNA in the CVE record.
NST Labs TechNstbrowser2 version ranges
- 1.2.0
- 1.2.1
References
- drive.google.com https://drive.google.com/drive/folders/1TzU1aHKabEHbMmSbqVR4HhxTAxKO6XII
- drive.google.com https://drive.google.com/drive/folders/1TzU1aHKabEHbMmSbqVR4HhxTAxKO6XII?usp=drive_link
- vuldb.com https://vuldb.com/cve/CVE-2026-122020
- vuldb.com https://vuldb.com/submit/1024994
- vuldb.com https://vuldb.com/vuln/431086
- vuldb.com https://vuldb.com/vuln/431086/cti