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Public proof of concept

CVE-2026-2142

D-Link DIR-823X set_qos sub_420688 os command injection

A public proof of concept exists; no exploitation attested.

  • Published2026-02-08
  • WeaknessCWE-77 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420688 of the file /goform/set_qos. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Timeline

dates in UTC
  1. 2026-02-0808:15CVE publishedNVD

Versions per branch

NVD
Dlink dir-823x firmwareversion to verify
BranchAffectedFixed in
250416.x= 250416no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • D-Link DIR-823X
    Affected
    • = 250416no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-23

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-02-10
  • CNACVSS 4.07.3known since 2026-10-23
  • CNACVSS 3.17.2known since 2026-10-23
  • CNACVSS 2.08.3known since 2026-10-23
  • CNAweakness (CWE)CWE-77, CWE-78known since 2026-10-23
  • FIRST EPSSEPSS score6.6 %2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-02-08
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-4vcq-f588-9vq4

Frequently asked questions

What is CVE-2026-2142?

A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420688 of the file /goform/set_qos. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Is CVE-2026-2142 actively exploited?

A proof-of-concept exploit exists for CVE-2026-2142, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-2142?

CVE-2026-2142 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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