RCE in D-link Dir-823x

CVE-2026-2155

A security flaw has been discovered in D-Link DIR-823X 250416. The affected element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. The manipulation of the argument dmz_host/dmz_enable results…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.038 (88.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (issue-tracking, Exploit, exploit, Issue Tracking)
  • cna@vuldb.com (Product, product)

Frequently asked questions

What is CVE-2026-2155?
CVE-2026-2155 is a high-severity vulnerability in D-link Dir-823x, classified under Command Injection. CVSS score: 7.2/10. Published 2026-02-08.
How severe is CVE-2026-2155?
High severity. CVSS v3 base score is 7.2 out of 10.