CVE-2026-77946 (GCVE-0-2026-77946)

Vulnerability from cvelistv5 – Published: 2026-08-22 11:00 – Updated: 2026-08-22 11:00
VLAI
Title
TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow
Summary
A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05. Affected by this vulnerability is the function uci_safe_get of the file /cgi-bin/apply_time.cgi of the component NTP Timezone Configuration Handler. Executing a manipulation of the argument system.ntp.server/system.ntp.enable_server/cameo.time.time_zone/cameo.cameo.syslog_server can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
CWE
References
URL Tags
https://vuldb.com/vuln/394175 vdb-entrytechnical-description
https://vuldb.com/vuln/394175/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-77946 third-party-advisory
https://vuldb.com/submit/881252 third-party-advisory
https://github.com/dxz0069/WAVLINK-WN530H4-Comman… exploit
Impacted products
Vendor Product Version CPE status
TRENDnet TEW-821DAP Affected: 2.2.01b05
    cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*
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Show details on NVD website

{
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            "cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NTP Timezone Configuration Handler"
          ],
          "product": "TEW-821DAP",
          "vendor": "TRENDnet",
          "versions": [
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        }
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          "tags": [
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          "tags": [
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          "url": "https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md"
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          "lang": "en",
          "time": "2026-08-21T20:47:45.000Z",
          "value": "VulDB entry last update"
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      "title": "TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow",
      "x_generator": [
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  "cveMetadata": {
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    "assignerShortName": "VulDB",
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    "datePublished": "2026-08-22T11:00:09.399Z",
    "dateReserved": "2026-08-21T18:42:40.547Z",
    "dateUpdated": "2026-08-22T11:00:09.399Z",
    "state": "PUBLISHED"
  },
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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.
  • 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.

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