RCE in D-Link Dns-340l
CVE-2026-85222
A vulnerability has been found in D-Link DNS-340L 1.01B04. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/addon_center.cgi of the component Add-On Center. Such manipulation of the argument f_name/f_url/f_flag/f_login_user leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.036 · change: +0.015
Affected products
- D-Link Dns-340l — versions 1.01B04
Weakness classification (CWE)
References
- github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/ma… (exploit)
- vuldb.com/cve/CVE-2026-85222 (third-party-advisory)
- vuldb.com/submit/894212 (third-party-advisory)
- vuldb.com/vuln/398421 (technical-description, vdb-entry)
- vuldb.com/vuln/398421/cti (signature, permissions-required)
- www.dlink.com/ (product)
Frequently asked questions
- What is CVE-2026-85222?
- CVE-2026-85222 is a critical-severity vulnerability in D-Link Dns-340l, classified under Command Injection. CVSS score: 9.1/10. Published 2026-09-03.
- How severe is CVE-2026-85222?
- Critical severity. CVSS v3 base score is 9.1 out of 10.