CVE-2026-15485 (GCVE-0-2026-15485)

Vulnerability from cvelistv5 – Published: 2026-07-12 07:00 – Updated: 2026-07-12 07:00 Unsupported When Assigned
VLAI
Title
TRENDnet TEW-821DAP DNS Lookup tools_nslookup sub_43F2C4 os command injection
Summary
A flaw has been found in TRENDnet TEW-821DAP 1.11B03. The impacted element is the function sub_43F2C4 of the file /goform/tools_nslookup of the component DNS Lookup Handler. This manipulation of the argument nslookup_target/dns_server causes os command injection. The attack can be initiated remotely. The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. " This vulnerability only affects products that are no longer supported by the maintainer.
Severity
5.3 (Medium)
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:X
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/377792 vdb-entrytechnical-description
https://vuldb.com/vuln/377792/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15485 third-party-advisory
https://vuldb.com/submit/842382 third-party-advisory
https://github.com/IOTRes/IOT_Firmware_Update/blo… broken-linkpatch
Impacted products
Vendor Product Version
TRENDnet TEW-821DAP Affected: 1.11B03
    cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
IOT_Res (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "DNS Lookup Handler"
          ],
          "product": "TEW-821DAP",
          "vendor": "TRENDnet",
          "versions": [
            {
              "status": "affected",
              "version": "1.11B03"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "IOT_Res (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw has been found in TRENDnet TEW-821DAP 1.11B03. The impacted element is the function sub_43F2C4 of the file /goform/tools_nslookup of the component DNS Lookup Handler. This manipulation of the argument nslookup_target/dns_server causes os command injection. The attack can be initiated remotely. The vendor explains: \"We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. \" This vulnerability only affects products that are no longer supported by the maintainer."
        }
      ],
      "metrics": [
        {
          "cvssV4_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:X",
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            "version": "2.0"
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      "problemTypes": [
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              "type": "CWE"
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        },
        {
          "descriptions": [
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              "description": "Command Injection",
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      "providerMetadata": {
        "dateUpdated": "2026-07-12T07:00:17.966Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
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          "name": "VDB-377792 | TRENDnet TEW-821DAP DNS Lookup tools_nslookup sub_43F2C4 os command injection",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/377792"
        },
        {
          "name": "VDB-377792 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/377792/cti"
        },
        {
          "name": "CVE-2026-15485 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-15485"
        },
        {
          "name": "Submit #842382 | Trendnet TEW-821DAP v1.11B03  CWE-78 Improper Neutralization of Special Elements used in an O",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/842382"
        },
        {
          "tags": [
            "broken-link",
            "patch"
          ],
          "url": "https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI3.md"
        }
      ],
      "tags": [
        "unsupported-when-assigned"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-11T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-07-11T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-07-11T12:17:37.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TRENDnet TEW-821DAP DNS Lookup tools_nslookup sub_43F2C4 os command injection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-15485",
    "datePublished": "2026-07-12T07:00:17.966Z",
    "dateReserved": "2026-07-11T10:12:21.398Z",
    "dateUpdated": "2026-07-12T07:00:17.966Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-15485",
      "date": "2026-07-12",
      "epss": "0.00228",
      "percentile": "0.13464"
    },
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  }
}



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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.


Detection rules are retrieved from Rulezet.