{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4209", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-03-15T11:55:59.083Z", "datePublished": "2026-03-16T02:32:13.384Z", "dateUpdated": "2026-03-16T15:31:58.188Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-03-16T02:32:13.384Z"}, "title": "D-Link DNS-1550-04 account_mgr.cgi cgi_chg_admin_pw command injection", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-77", "lang": "en", "description": "Command Injection"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-74", "lang": "en", "description": "Injection"}]}], "affected": [{"vendor": "D-Link", "product": "DNS-120", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNR-202L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-315L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-320", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-320L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-320LW", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-321", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNR-322L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-323", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-325", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-326", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-327L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNR-326", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-340L", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-343", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-345", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-726-4", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-1100-4", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-1200-05", "versions": [{"version": "20260205", "status": "affected"}]}, {"vendor": "D-Link", "product": "DNS-1550-04", "versions": [{"version": "20260205", "status": "affected"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability was identified 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. 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Affected is the function cgi_create_import_users/cgi_user_batch_create/cgi_user_set_quota/cgi_user_del/cgi_user_modify/cgi_group_set_quota/cgi_group_modify/cgi_group_add/cgi_user_add/cgi_get_modify_group_info/cgi_chg_admin_pw of the file /cgi-bin/account_mgr.cgi. The manipulation leads to command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used."}, {"lang": "es", "value": "Se identific\u00f3 una vulnerabilidad 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 el 20260205. La funci\u00f3n afectada es cgi_create_import_users/cgi_user_batch_create/cgi_user_set_quota/cgi_user_del/cgi_user_modify/cgi_group_set_quota/cgi_group_modify/cgi_group_add/cgi_user_add/cgi_get_modify_group_info/cgi_chg_admin_pw del archivo /cgi-bin/account_mgr.cgi. La manipulaci\u00f3n conduce a inyecci\u00f3n de comandos. Es posible iniciar el ataque de forma remota. El exploit est\u00e1 disponible p\u00fablicamente y podr\u00eda ser utilizado."}], "id": "CVE-2026-4209", "lastModified": "2026-04-29T01:00:01.613", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", 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"DNR-326", "source": "cna", "vendor": "D-Link"}, "product": "dnr-326", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-1100-4", "source": "cna", "vendor": "D-Link"}, "product": "dns-1100-4", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-120", "source": "cna", "vendor": "D-Link"}, "product": "dns-120", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-1200-05", "source": "cna", "vendor": "D-Link"}, "product": "dns-1200-05", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-1550-04", "source": "cna", "vendor": "D-Link"}, "product": "dns-1550-04", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-315L", "source": "cna", "vendor": "D-Link"}, "product": "dns-315l", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-320", "source": "cna", "vendor": "D-Link"}, "product": "dns-320", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-320L", "source": "cna", "vendor": "D-Link"}, "product": "dns-320l", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-320LW", "source": "cna", "vendor": "D-Link"}, "product": "dns-320lw", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-321", "source": "cna", "vendor": "D-Link"}, "product": "dns-321", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-323", "source": "cna", "vendor": "D-Link"}, "product": "dns-323", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-325", "source": "cna", "vendor": "D-Link"}, "product": "dns-325", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-326", "source": "cna", "vendor": "D-Link"}, "product": "dns-326", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-327L", "source": "cna", "vendor": "D-Link"}, "product": "dns-327l", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-340L", "source": "cna", "vendor": "D-Link"}, "product": "dns-340l", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-343", "source": "cna", "vendor": "D-Link"}, "product": "dns-343", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-345", "source": "cna", "vendor": "D-Link"}, "product": "dns-345", "vendor": "d-link"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "20260205"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DNS-726-4", "source": "cna", "vendor": "D-Link"}, "product": "dns-726-4", "vendor": "d-link"}], "analysis": {"en": {"generated_at": "2026-03-19T16:02:42.866808+00:00", "value": {"mitigation_remediation": ["Check the D\u2011Link website or firmware repository for an updated firmware release that addresses the account_mgr.cgi command injection.", "If an update is not immediately available, block or filter traffic to the /cgi-bin/account_mgr.cgi path on the device using built-in firewall rules or a reverse proxy to disable the vulnerable functionality.", "Monitor device logs and network traffic for signs of exploitation, such as unexpected outbound connections or execution of unknown binaries.", "Consider restricting administrative access to trusted IP addresses and enforce role\u2011based access controls to reduce the attack surface."], "summary": {"action": "Apply Patch", "impact": "Remote Command Execution"}, "threat_synthesis": {"affected_systems": "Devices affected include D\u2011Link models DNS\u2011120, DNR\u2011202L, DNS\u2011315L, DNS\u2011320, DNS\u2011320L, DNS\u2011320LW, DNS\u2011321, DNR\u2011322L, DNS\u2011323, DNS\u2011325, DNS\u2011326, DNS\u2011327L, DNR\u2011326, DNS\u2011340L, DNS\u2011343, DNS\u2011345, DNS\u2011726\u20114, DNS\u20111100\u20114, DNS\u20111200\u201105, and DNS\u20111550\u201104. Firmware versions up to 20260205 are vulnerable, as specified in the description. The listed CNA product list confirms that these models are impacted.", "description_and_impact": "A command injection flaw was discovered in the /cgi-bin/account_mgr.cgi script used by many D\u2011Link router models. The vulnerability resides in several CGI functions, including cgi_chg_admin_pw, and allows a remote attacker to inject arbitrary shell commands into the device\u2019s operating system. This gives the attacker the ability to execute commands on the appliance, which could lead to a compromise of the device\u2019s internal state. The weakness is categorized as CWE\u201174 and CWE\u201177. The listed description states that the attack can be performed remotely; however, the overall impact on confidentiality, integrity, and availability is not explicitly quantified in the provided data, so we limit the impact statements to the explicitly stated remote code execution capability.", "risk_and_exploitability": "The CVSS base score is 5.3, indicating moderate severity, and the EPSS score is less than 1%, suggesting a low current exploitation probability. The vulnerability is not included in the CISA KEV catalogue. Exploit code is publicly available, and the description notes that the attack is possible from a remote location through the vulnerable CGI endpoints. Given the moderate severity and low exploitation likelihood, the risk is considered moderate, but the potential for remote command execution warrants timely action."}}}}, "created": "2026-03-16T09:58:35.740033+00:00", "updated": "2026-03-23T14:00:40.761380+00:00", "vendors": ["d-link", "d-link$PRODUCT$dnr-202l", "d-link$PRODUCT$dnr-322l", "d-link$PRODUCT$dnr-326", "d-link$PRODUCT$dns-1100-4", "d-link$PRODUCT$dns-120", "d-link$PRODUCT$dns-1200-05", "d-link$PRODUCT$dns-1550-04", "d-link$PRODUCT$dns-315l", "d-link$PRODUCT$dns-320", "d-link$PRODUCT$dns-320l", "d-link$PRODUCT$dns-320lw", "d-link$PRODUCT$dns-321", "d-link$PRODUCT$dns-323", "d-link$PRODUCT$dns-325", "d-link$PRODUCT$dns-326", "d-link$PRODUCT$dns-327l", "d-link$PRODUCT$dns-340l", "d-link$PRODUCT$dns-343", "d-link$PRODUCT$dns-345", "d-link$PRODUCT$dns-726-4"]}