CVE-2026-4196
CRITICAL WAF: High
CVSS 9.8
Published: 2026-03-16
CWE-77 CWE-77
A vulnerability has been found 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. This impacts the function cgi_recovery/cgi_backup_now/cgi_set_schedule/cgi_set_rsync_server of the file /cgi-bin/remote_backup.cgi. The manipulation leads to command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
WAF Coverage Analysis
Command Injection
High WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution
Command Injection
High WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution
Affected Software
| Vendor | Product | Version |
|---|---|---|
| dlink | dns-1550-04_firmware | up to 2026-02-05 |
| dlink | dns-315l_firmware | up to 2026-02-05 |
| dlink | dns-320_firmware | up to 2026-02-05 |
| dlink | dns-320l_firmware | up to 2026-02-05 |
| dlink | dns-320lw_firmware | up to 2026-02-05 |
| dlink | dns-321_firmware | up to 2026-02-05 |
| dlink | dns-322l_firmware | up to 2026-02-05 |
| dlink | dns-323_firmware | up to 2026-02-05 |
| dlink | dns-325_firmware | up to 2026-02-05 |
| dlink | dns-326_firmware | up to 2026-02-05 |
References
- github.com (Exploit, Third Party Advisory)
- github.com (Exploit, Third Party Advisory)
- vuldb.com (Permissions Required, VDB Entry)
- vuldb.com (Third Party Advisory, VDB Entry)
- vuldb.com (Third Party Advisory, VDB Entry)
- vuldb.com (Third Party Advisory, VDB Entry)
- vuldb.com (Third Party Advisory, VDB Entry)
- vuldb.com (Third Party Advisory, VDB Entry)
- www.dlink.com (Product)