Critical severity · published Mar 16, 2026
CVE-2026-4210
D-Link DNS-1550-04 time_machine.cgi cgi_tm_set_share command injection
9.8
CVSS
4%
EPSS
No
On KEV
Description
A security flaw has been discovered in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. Affected by this vulnerability is the function cgi_tm_set_share of the file /cgi-bin/time_machine.cgi. The manipulation of the argument Name results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.0% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
DNR-202L · D-Link
20260205 · source: vendor
DN
DNR-322L · D-Link
20260205 · source: vendor
DN
DNR-326 · D-Link
20260205 · source: vendor
DN
DNS-1100-4 · D-Link
20260205 · source: vendor
DN
DNS-120 · D-Link
20260205 · source: vendor
DN
DNS-1200-05 · D-Link
20260205 · source: vendor
DN
DNS-1550-04 · D-Link
20260205 · source: vendor
DN
DNS-315L · D-Link
20260205 · source: vendor
DN
DNS-320 · D-Link
20260205 · source: vendor
DN
DNS-320L · D-Link
20260205 · source: vendor
DN
DNS-320LW · D-Link
20260205 · source: vendor
DN
DNS-321 · D-Link
20260205 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4210
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4210
Exploit
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_159/159.md
Permissions Required
https://vuldb.com/?ctiid.351121
Third Party Advisory
https://vuldb.com/?id.351121
Third Party Advisory
https://vuldb.com/?submit.770440
Product
https://www.dlink.com/
More from DNR-202L
9.8
CVE-2026-4214
D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow
9.8
CVE-2026-4213
D-Link DNS-1550-04 gui_mgr.cgi cgi_myfavorite_verify stack-based overflow
9.8
CVE-2026-4212
D-Link DNS-1550-04 download_mgr.cgi Downloads_Schedule_Info stack-based overflow
9.8
CVE-2026-4211
D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow
9.8
CVE-2026-4209
D-Link DNS-1550-04 account_mgr.cgi cgi_chg_admin_pw command injection