Critical severity · published Sep 3, 2026
CVE-2026-85223
D-Link DNS-340L CGI dropbox.cgi os command injection
9.9
CVSS
3.3%
EPSS
No
On KEV
Description
A vulnerability was found in D-Link DNS-340L 1.01B04. Affected by this issue is some unknown functionality of the file /cgi-bin/dropbox.cgi of the component CGI Handler. Performing a manipulation of the argument callback_url/sync_interval results in os command injection. The attack can be initiated remotely. The exploit has been made public and could be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.3% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
DNS-340L · D-Link
1.01B04 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85223
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85223
github.com
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-008-vulndb.md
vuldb.com
https://vuldb.com/cve/CVE-2026-85223
vuldb.com
https://vuldb.com/submit/894213
vuldb.com
https://vuldb.com/vuln/398422
vuldb.com
https://vuldb.com/vuln/398422/cti
www.dlink.com
https://www.dlink.com/
More from DNS-340L
9.8
CVE-2024-3273
D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi command injection
9.8
CVE-2024-3272
D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials
9.9
CVE-2026-82692
D-Link DNS-340L/DNS-345 iscsi_mgr.cgi os command injection
9.9
CVE-2026-82689
D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection
9.8
CVE-2026-4214
D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow