D-Link DNS-1550-04 remote_backup.cgi cgi_check_rsync_rw command injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16448
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-21 15:16:33 UTC
Updated2026-07-21 17:07:04 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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:X/V:X/RE:X/U:X

Problem Types: CWE-74 | CWE-77 | CWE-77 Command Injection | CWE-74 Injection

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA D-Link DNS-120 affected 20260205 Not specified
CNA D-Link DNR-202L affected 20260205 Not specified
CNA D-Link DNS-315L affected 20260205 Not specified
CNA D-Link DNS-320 affected 20260205 Not specified
CNA D-Link DNS-320L affected 20260205 Not specified
CNA D-Link DNS-320LW affected 20260205 Not specified
CNA D-Link DNS-321 affected 20260205 Not specified
CNA D-Link DNR-322L affected 20260205 Not specified
CNA D-Link DNS-323 affected 20260205 Not specified
CNA D-Link DNS-325 affected 20260205 Not specified
CNA D-Link DNS-326 affected 20260205 Not specified
CNA D-Link DNS-327L affected 20260205 Not specified
CNA D-Link DNR-326 affected 20260205 Not specified
CNA D-Link DNS-340L affected 20260205 Not specified
CNA D-Link DNS-343 affected 20260205 Not specified
CNA D-Link DNS-345 affected 20260205 Not specified
CNA D-Link DNS-726-4 affected 20260205 Not specified
CNA D-Link DNS-1100-4 affected 20260205 Not specified
CNA D-Link DNS-1200-05 affected 20260205 Not specified
CNA D-Link DNS-1550-04 affected 20260205 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/380827/cti [email protected] vuldb.com
vuldb.com/cve/CVE-2026-16448 [email protected] vuldb.com
vuldb.com/submit/858469 [email protected] vuldb.com
vuldb.com/vuln/380827 [email protected] vuldb.com
www.dlink.com [email protected] www.dlink.com
ucn9h68n9289.feishu.cn/docx/OfhNdwzvXoBlJBxDIW7clVmjnuh [email protected] ucn9h68n9289.feishu.cn
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: red88-debug (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-21T00:00:00.000ZAdvisory disclosed
CNA2026-07-21T02:00:00.000ZVulDB entry created
CNA2026-07-21T10:54:38.000ZVulDB entry last update

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