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CVE-2026-16448— D-Link DNS-1550-04 remote_backup.cgi cgi_check_rsync_rw command injection

Quick assessment

Affected
D-Link DNS-120
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

D-Link DNS-120是中国D-Link公司的一款DNS设备。 D-Link DNS-120存在安全漏洞，该漏洞源于文件/cgi-bin/remote_backup.cgi中函数cgi_check_rsync_rw的参数ip存在命令注入，可能导致远程攻击。

CVSS 6.3 · Medium EPSS 1.93% · P79

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 20

VendorProduct Version RangeStatus
D-Link DNR-202L 20260205 affected
D-Link DNR-322L 20260205 affected
D-Link DNR-326 20260205 affected
D-Link DNS-1100-4 20260205 affected
D-Link DNS-120 20260205 affected
D-Link DNS-1200-05 20260205 affected
D-Link DNS-1550-04 20260205 affected
D-Link DNS-315L 20260205 affected
D-Link DNS-320 20260205 affected
D-Link DNS-320L 20260205 affected
D-Link DNS-320LW 20260205 affected
D-Link DNS-321 20260205 affected
D-Link DNS-323 20260205 affected
D-Link DNS-325 20260205 affected
D-Link DNS-326 20260205 affected
D-Link DNS-327L 20260205 affected
D-Link DNS-340L 20260205 affected
D-Link DNS-343 20260205 affected
D-Link DNS-345 20260205 affected
D-Link DNS-726-4 20260205 affected
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I. Basic Information for CVE-2026-16448

Vulnerability Information
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Vulnerability Title
D-Link DNS-1550-04 remote_backup.cgi cgi_check_rsync_rw command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A 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, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The affected element is the function cgi_check_rsync_rw of the file /cgi-bin/remote_backup.cgi. The manipulation of the argument ip results in command injection. The attack can be executed remotely. The exploit has been made public and could be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DNS-120 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DNS-120是中国D-Link公司的一款DNS设备。 D-Link DNS-120存在安全漏洞，该漏洞源于文件/cgi-bin/remote_backup.cgi中函数cgi_check_rsync_rw的参数ip存在命令注入，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DNS-120 20260205 cpe:2.3:h:d-link:dns-120:*:*:*:*:*:*:*:*
D-Link DNR-202L 20260205 cpe:2.3:h:d-link:dnr-202l:*:*:*:*:*:*:*:*
D-Link DNS-315L 20260205 cpe:2.3:h:d-link:dns-315l:*:*:*:*:*:*:*:*
D-Link DNS-320 20260205 cpe:2.3:h:d-link:dns-320:*:*:*:*:*:*:*:*
D-Link DNS-320L 20260205 cpe:2.3:h:d-link:dns-320l:*:*:*:*:*:*:*:*
D-Link DNS-320LW 20260205 cpe:2.3:h:d-link:dns-320lw:*:*:*:*:*:*:*:*
D-Link DNS-321 20260205 cpe:2.3:h:d-link:dns-321:*:*:*:*:*:*:*:*
D-Link DNR-322L 20260205 cpe:2.3:h:d-link:dnr-322l:*:*:*:*:*:*:*:*
D-Link DNS-323 20260205 cpe:2.3:h:d-link:dns-323:*:*:*:*:*:*:*:*
D-Link DNS-325 20260205 cpe:2.3:h:d-link:dns-325:*:*:*:*:*:*:*:*
D-Link DNS-326 20260205 cpe:2.3:h:d-link:dns-326:*:*:*:*:*:*:*:*
D-Link DNS-327L 20260205 cpe:2.3:h:d-link:dns-327l:*:*:*:*:*:*:*:*
D-Link DNR-326 20260205 cpe:2.3:h:d-link:dnr-326:*:*:*:*:*:*:*:*
D-Link DNS-340L 20260205 cpe:2.3:h:d-link:dns-340l:*:*:*:*:*:*:*:*
D-Link DNS-343 20260205 cpe:2.3:h:d-link:dns-343:*:*:*:*:*:*:*:*
D-Link DNS-345 20260205 cpe:2.3:h:d-link:dns-345:*:*:*:*:*:*:*:*
D-Link DNS-726-4 20260205 cpe:2.3:h:d-link:dns-726-4:*:*:*:*:*:*:*:*
D-Link DNS-1100-4 20260205 cpe:2.3:h:d-link:dns-1100-4:*:*:*:*:*:*:*:*
D-Link DNS-1200-05 20260205 cpe:2.3:h:d-link:dns-1200-05:*:*:*:*:*:*:*:*
D-Link DNS-1550-04 20260205 cpe:2.3:h:d-link:dns-1550-04:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-16448

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III. Intelligence Information for CVE-2026-16448

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Vendor Pages for CVE-2026-16448 (1)

Other References for CVE-2026-16448 (1)

Same Patch Batch · D-Link · 2026-07-21 · 6 CVEs total

CVE-2026-16329 7.3 HIGH D-Link DNS-320 uploadify.php unrestricted upload
CVE-2026-16331 7.3 HIGH D-Link DNS-320 save_ajax.php unrestricted upload
CVE-2026-16330 7.3 HIGH D-Link DNS-320 uploadify.php unrestricted upload
CVE-2026-16332 7.3 HIGH D-Link DNS-320 multi_uploadify.php unrestricted upload
CVE-2026-16447 7.3 HIGH D-Link DNS-320 multi_uploadify.php unrestricted upload

IV. Related Vulnerabilities

Same product: DNS-120
Same vendor: D-Link
Same weakness: CWE-77

V. Comments for CVE-2026-16448

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