CVE-2026-76591 (GCVE-0-2026-76591)

Vulnerability from cvelistv5 – Published: 2026-08-19 22:00 – Updated: 2026-08-19 22:00
VLAI
Title
TRENDnet TEW-755AP ssi email.cgi log_email_server command injection
Summary
A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
CWE
References
Impacted products
Vendor Product Version CPE status
TRENDnet TEW-755AP Affected: 20260702
    cpe:2.3:o:trendnet:tew-755ap_firmware:*:*:*:*:*:*:*:*
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Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:trendnet:tew-755ap_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "ssi"
          ],
          "product": "TEW-755AP",
          "vendor": "TRENDnet",
          "versions": [
            {
              "status": "affected",
              "version": "20260702"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "fuhanhan2015 (VulDB User)"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks."
        }
      ],
      "metrics": [
        {
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            "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:L/SI:L/SA:L/E:P",
            "version": "4.0"
          }
        },
        {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R",
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            "version": "3.0"
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        },
        {
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            "baseScore": 6.5,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
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      ],
      "problemTypes": [
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            {
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              "description": "Injection",
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      "providerMetadata": {
        "dateUpdated": "2026-08-19T22:00:11.212Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-393088 | TRENDnet TEW-755AP ssi email.cgi log_email_server command injection",
          "tags": [
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            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/393088"
        },
        {
          "name": "VDB-393088 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/393088/cti"
        },
        {
          "name": "CVE-2026-76591 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-76591"
        },
        {
          "name": "Submit #877853 | TRENDnet TEW-755AP TEW-755AP Command Injection",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/877853"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/meishigana/CVE/tree/main/team15_20260702/14_755ap-ssi-cmdi"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/meishigana/CVE/blob/main/team15_20260702/14_755ap-ssi-cmdi/poc/poc-ssi-injection.py"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-19T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-08-19T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-08-19T16:43:20.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TRENDnet TEW-755AP ssi email.cgi log_email_server command injection",
      "x_generator": [
        "VulDB PVTS v202608"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-76591",
    "datePublished": "2026-08-19T22:00:11.212Z",
    "dateReserved": "2026-08-19T14:38:06.124Z",
    "dateUpdated": "2026-08-19T22:00:11.212Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-76591",
      "date": "2026-08-20",
      "epss": "0.01318",
      "percentile": "0.68572"
    },
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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

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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.
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  • 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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