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 in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.041 (90.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.041 · change: +0.002
Affected products
- D-Link Dir-823x — versions 250416
- Dlink Dir-823x
- Dlink Dir-823x Firmware — versions 250416
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/master-abc/cve/issues/32 (issue-tracking, Exploit, exploit, Issue Tracking)
- www.dlink.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.