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Impacted is the function cgi_addgroup_get_group_quota_minsize of the file /cgi-bin/account_mgr.cgi. The manipulation of the argument Name results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used."}, {"lang": "es", "value": "Una vulnerabilidad fue encontrada 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_addgroup_get_group_quota_minsize del archivo /cgi-bin/account_mgr.cgi. La manipulaci\u00f3n del argumento Name resulta en un desbordamiento de b\u00fafer basado en pila. El ataque puede realizarse de forma remota. El exploit se ha hecho p\u00fablico y podr\u00eda utilizarse."}], "id": "CVE-2026-5214", "lastModified": "2026-04-02T17:16:00.410", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-03-31T22:16:22.417", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_169/169.md"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/780439"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/354349"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/354349/cti"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.dlink.com/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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"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": "2026-04-02T23:51:29.778984+00:00", "value": {"mitigation_remediation": ["Update the device firmware to a version that removes the vulnerability.", "If a patch is not yet available, block or restrict external access to /cgi-bin/account_mgr.cgi using firewall rules or ACLs.", "Where possible, disable the web management interface or enforce strict network segmentation to isolate affected devices.", "Continuously monitor device logs and network traffic for signs of exploitation attempts and verify the patch has been applied correctly."], "summary": {"action": "Immediate patch", "impact": "Remote code execution via stack-based overflow"}, "threat_synthesis": {"affected_systems": "The flaw affects a wide array of D\u2011Link routers and network devices, including models DNR\u2011202L, DNR\u2011322L, DNR\u2011326, DNS\u20111100\u20114, DNS\u2011120, DNS\u20111200\u201105, DNS\u20111550\u201104, DNS\u2011315L, DNS\u2011320, DNS\u2011320L, DNS\u2011320LW, DNS\u2011321, DNS\u2011323, DNS\u2011325, DNS\u2011326, DNS\u2011327L, DNS\u2011340L, DNS\u2011343, DNS\u2011345, and DNS\u2011726\u20114. Firmware versions up to and including 20260205 are vulnerable; newer releases contain the fix.", "description_and_impact": "A stack-based buffer overflow occurs in the cgi_addgroup_get_group_quota_minsize function of /cgi-bin/account_mgr.cgi when the Name argument is manipulated. This overflow can overwrite adjacent stack data such as return addresses, giving an attacker the possibility of executing arbitrary code and gaining full control of the affected device.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 8.7, indicating high severity, and an EPSS score below 1\u202f%, suggesting a currently low exploitation probability. It is not listed in the CISA KEV catalog, but the exploit code has been publicly released. Attackers can trigger the overflow from any remote network via the device\u2019s web interface, potentially leading to complete device compromise."}}}}, "created": "2026-04-02T07:52:16.035828+00:00", "updated": "2026-04-03T09:19:20.704647+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"]}