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vuln-cve/data/2026/4xxx/CVE-2026-4211.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-4211",
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"state": "PUBLISHED",
"assignerShortName": "VulDB",
"dateReserved": "2026-03-15T11:59:27.035Z",
"datePublished": "2026-03-16T03:32:10.022Z",
"dateUpdated": "2026-03-16T15:30:57.338Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB",
"dateUpdated": "2026-03-16T03:32:10.022Z"
},
"title": "D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow",
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-121",
"lang": "en",
"description": "Stack-based Buffer Overflow"
}
]
},
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-119",
"lang": "en",
"description": "Memory Corruption"
}
]
}
],
"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 weakness has been 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. Affected by this issue is the function Local_Backup_Info of the file /cgi-bin/local_backup_mgr.cgi. This manipulation of the argument f_idx causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks."
}
],
"metrics": [
{
"cvssV4_0": {
"version": "4.0",
"baseScore": 8.7,
"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",
"baseSeverity": "HIGH"
}
},
{
"cvssV3_1": {
"version": "3.1",
"baseScore": 8.8,
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
"baseSeverity": "HIGH"
}
},
{
"cvssV3_0": {
"version": "3.0",
"baseScore": 8.8,
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
"baseSeverity": "HIGH"
}
},
{
"cvssV2_0": {
"version": "2.0",
"baseScore": 9,
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"
}
}
],
"timeline": [
{
"time": "2026-03-15T00:00:00.000Z",
"lang": "en",
"value": "Advisory disclosed"
},
{
"time": "2026-03-15T01:00:00.000Z",
"lang": "en",
"value": "VulDB entry created"
},
{
"time": "2026-03-15T13:04:30.000Z",
"lang": "en",
"value": "VulDB entry last update"
}
],
"credits": [
{
"lang": "en",
"value": "pjqwudi (VulDB User)",
"type": "reporter"
}
],
"references": [
{
"url": "https://vuldb.com/?id.351122",
"name": "VDB-351122 | D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow",
"tags": [
"vdb-entry",
"technical-description"
]
},
{
"url": "https://vuldb.com/?ctiid.351122",
"name": "VDB-351122 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
]
},
{
"url": "https://vuldb.com/?submit.770441",
"name": "Submit #770441 | 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 Stack-based Buffer Overflow",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_160/160.md",
"tags": [
"exploit"
]
},
{
"url": "https://www.dlink.com/",
"tags": [
"product"
]
}
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-03-16T15:30:50.377709Z",
"id": "CVE-2026-4211",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-03-16T15:30:57.338Z"
}
}
]
}
}