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CVE-2026-4195· NVD / CVE Program· CNA VulDB

D-Link DNS-1550-04 wizard_mgr.cgi command injection

A flaw 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 affects an unknown function of the file /cgi-bin/wizard_mgr.cgi. Executing a manipulation can lead to command injection. The attack can be executed remotely. The exploit has been published and may be used.

LowCVSS 2.1 · v4.0—No exploit No fix recorded

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Published
Mar 16, 2026
Updated
Jun 17, 2026
EPSS
5.5% · 93th percentile
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Report tools

JSON

Action score

10

Monitor

Low priority for now.

CVSS
8 / 40 · 2.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.5%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
5.3
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
dlinkdnr-202l firmware
dlinkdnr-202l
dlinkdnr-326 firmware
dlinkdnr-326
dlinkdns-1100-4 firmware
dlinkdns-1100-4
dlinkdns-120 firmware
dlinkdns-120
dlinkdns-1200-05 firmware
dlinkdns-1200-05
dlinkdns-1550-04 firmware
dlinkdns-1550-04

and 28 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • dlink dnr-202l firmwareup to 2026-02-05 inclusive
  • dlink dnr-326 firmwareup to 2026-02-05 inclusive
  • dlink dns-1100-4 firmwareup to 2026-02-05 inclusive
  • dlink dns-120 firmwareup to 2026-02-05 inclusive
  • dlink dns-1200-05 firmwareup to 2026-02-05 inclusive
  • dlink dns-1550-04 firmwareup to 2026-02-05 inclusive
  • dlink dns-315l firmwareup to 2026-02-05 inclusive
  • dlink dns-320 firmwareup to 2026-02-05 inclusive
  • dlink dns-320l firmwareup to 2026-02-05 inclusive
  • dlink dns-320lw firmwareup to 2026-02-05 inclusive
  • dlink dns-321 firmwareup to 2026-02-05 inclusive
  • dlink dns-322l firmwareup to 2026-02-05 inclusive
  • dlink dns-323 firmwareup to 2026-02-05 inclusive
  • dlink dns-325 firmwareup to 2026-02-05 inclusive
  • dlink dns-326 firmwareup to 2026-02-05 inclusive
  • dlink dns-327l firmwareup to 2026-02-05 inclusive
  • dlink dns-340l firmwareup to 2026-02-05 inclusive
  • dlink dns-343 firmwareup to 2026-02-05 inclusive
  • dlink dns-345 firmwareup to 2026-02-05 inclusive
  • dlink dns-726-4 firmwareup to 2026-02-05 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • D-Link DNR-202L

    • 20260205affected

  • D-Link DNR-322L

    • 20260205affected

  • D-Link DNR-326

    • 20260205affected

  • D-Link DNS-1100-4

    • 20260205affected

  • D-Link DNS-120

    • 20260205affected

  • D-Link DNS-1200-05

    • 20260205affected

  • D-Link DNS-1550-04

    • 20260205affected

  • D-Link DNS-315L

    • 20260205affected

  • D-Link DNS-320

    • 20260205affected

  • D-Link DNS-320L

    • 20260205affected

  • D-Link DNS-320LW

    • 20260205affected

  • D-Link DNS-321

    • 20260205affected

Same product

dlink: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-5214D-Link DNS-1550-04 account_mgr.cgi cgi_addgroup_get_group_quota_minsize stack-based overflow
    29Monitor
  • CVE-2026-5213D-Link DNS-1550-04 account_mgr.cgi cgi_adduser_to_session stack-based overflow
    29Monitor
  • CVE-2026-5212D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
    29Monitor
  • CVE-2026-5211D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow
    29Monitor
  • CVE-2026-4214D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow
    29Monitor
  • CVE-2026-4213D-Link DNS-1550-04 gui_mgr.cgi cgi_myfavorite_verify stack-based overflow
    29Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days+2% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-41970 days apartD-Link DNS-1550-04 download_mgr.cgi RSS_Item_List command injection
    15Monitor
  • CVE-2026-42030 days apartD-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection
    10Monitor
  • CVE-2026-42040 days apartD-Link DNS-1550-04 gui_mgr.cgi cgi_mycloud_auto_downlaod command injection
    10Monitor
  • CVE-2026-42050 days apartD-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection
    10Monitor
  • CVE-2026-42060 days apartD-Link DNS-1550-04 dsk_mgr.cgi ScanDisk_run_e2fsck command injection
    10Monitor
  • CVE-2026-42100 days apartD-Link DNS-1550-04 time_machine.cgi cgi_tm_set_share command injection
    10Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records