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Vulnerability record · CVE-2026-4196 · published 16 March 2026

CVE-2026-4196: Dlink dns-1550-04 firmware injection vulnerability

Dlink · Dns 1550 04 Firmware

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.

2.1 CVSS 4.0 Low EPSS 5.8% · top 7.2% CWE-74 · InjectionCWE-77 · Command injection
2.1CVSS 4.0 base score, v2 6.5
5.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
20Affected product versions listed by NVD
9References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

20 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_98/98.md ExploitThird Party Advisory
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_99/99.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.351108 Permissions RequiredVDB Entry
https://vuldb.com/?id.351108 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.769855 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.769856 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.769857 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.769858 Third Party AdvisoryVDB Entry
https://www.dlink.com/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-3272D-Link NAS Devices Hard-Coded Credentials in nas_sharing.cgiD-Link DNS and DNR series NAS devices contain hard-coded credentials reachable through the HTTP GET handler in /cgi-bin/nas_sharing.cgi, where the 'u…KEVEPSS 98%analysed9.8CVE-2024-3273D-Link legacy NAS command injection in nas_sharing.cgiAn unauthenticated command injection flaw exists in the HTTP GET request handler of /cgi-bin/nas_sharing.cgi on multiple end-of-life D-Link NAS model…KEVEPSS 100%analysed8.7CVE-2024-7832Dlink dns-120 firmware classic buffer overflow vulnerability** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS…EPSS 2.1%8.7CVE-2024-7831Dlink dns-120 firmware classic buffer overflow vulnerability** UNSUPPORTED WHEN ASSIGNED ** A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L…EPSS 1.8%8.7CVE-2024-7829Dlink dns-120 firmware classic buffer overflow vulnerability** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS…EPSS 1.8%8.7CVE-2024-7830Dlink dns-120 firmware classic buffer overflow vulnerability** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L…EPSS 1.8%8.7CVE-2024-7828Dlink dns-120 firmware classic buffer overflow vulnerability** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as critical was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW,…EPSS 16%7.4CVE-2026-5214Dlink dnr-202l firmware memory buffer overflow vulnerabilityA vulnerability was 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…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2026-4196), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.