CVE-2026-4203 (GCVE-0-2026-4203)
Vulnerability from cvelistv5 – Published: 2026-03-16 01:02 – Updated: 2026-03-16 14:40
VLAI
EPSS
VEX
Title
D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection
Summary
A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-16 14:30 UTC
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.351115 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.351115 | signaturepermissions-required |
| https://vuldb.com/?submit.770401 | third-party-advisory |
| https://vuldb.com/?submit.770402 | third-party-advisory |
| https://vuldb.com/?submit.770403 | third-party-advisory |
| https://vuldb.com/?submit.770404 | third-party-advisory |
| https://vuldb.com/?submit.770405 | third-party-advisory |
| https://vuldb.com/?submit.770406 | third-party-advisory |
| https://vuldb.com/?submit.770407 | third-party-advisory |
| https://vuldb.com/?submit.770408 | third-party-advisory |
| https://github.com/wudipjq/my_vuln/blob/main/D-Li… | related |
| https://github.com/wudipjq/my_vuln/blob/main/D-Li… | exploit |
| https://www.dlink.com/ | product |
Impacted products
20 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| D-Link | DNS-120 |
Affected:
20260205
|
guessed | |
| D-Link | DNR-202L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-315L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320LW |
Affected:
20260205
|
guessed | |
| D-Link | DNS-321 |
Affected:
20260205
|
guessed | |
| D-Link | DNR-322L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-323 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-325 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-326 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-327L |
Affected:
20260205
|
guessed | |
| D-Link | DNR-326 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-340L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-343 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-345 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-726-4 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1100-4 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1200-05 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1550-04 |
Affected:
20260205
|
guessed |
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"vendor": "D-Link",
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"product": "DNS-1550-04",
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"versions": [
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The exploit is now public and may be used.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad fue detectada en 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 y DNS-1550-04 hasta 20260205. La funci\u00f3n afectada es cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd del archivo /cgi-bin/network_mgr.cgi. La manipulaci\u00f3n da como resultado una inyecci\u00f3n de comandos. El ataque puede lanzarse de forma remota. El exploit es ahora p\u00fablico y puede 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"redhat_vex": {
"current_release_date": "2026-03-27T07:33:34+00:00",
"cve": "CVE-2026-4203",
"id": "CVE-2026-4203",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4203.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-4203\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-16T14:30:37.762818Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-16T14:36:56.937Z\"}}], \"cna\": {\"title\": \"D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"pjq123 (VulDB User)\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"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\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 6.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"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\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 6.5, \"vectorString\": \"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"vendor\": \"D-Link\", \"product\": \"DNS-120\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNR-202L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-315L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-320\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-320L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-320LW\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-321\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNR-322L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-323\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-325\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-326\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-327L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNR-326\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-340L\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-343\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-345\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-726-4\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-1100-4\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-1200-05\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}, {\"vendor\": \"D-Link\", \"product\": \"DNS-1550-04\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260205\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-03-15T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-03-15T01:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-03-15T12:38:47.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/?id.351115\", \"name\": \"VDB-351115 | D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/?ctiid.351115\", \"name\": \"VDB-351115 | CTI Indicators (IOB, IOC, TTP, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/?submit.770401\", \"name\": \"Submit #770401 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770402\", \"name\": \"Submit #770402 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770403\", \"name\": \"Submit #770403 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770404\", \"name\": \"Submit #770404 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 command (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770405\", \"name\": \"Submit #770405 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770406\", \"name\": \"Submit #770406 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770407\", \"name\": \"Submit #770407 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/?submit.770408\", \"name\": \"Submit #770408 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.md\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.md\", \"tags\": [\"exploit\"]}, {\"url\": \"https://www.dlink.com/\", \"tags\": [\"product\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-77\", \"description\": \"Command Injection\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-74\", \"description\": \"Injection\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-03-16T01:02:10.990Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-4203\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-16T14:40:36.405Z\", \"dateReserved\": \"2026-03-15T11:33:42.215Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-03-16T01:02:10.990Z\", \"assignerShortName\": \"VulDB\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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