---
id: CVE-2026-77946
title: A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05
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 manipulatio…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
published: '2026-08-22'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77946'
references:
  - url: >-
      https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-77946'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/881252'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394175'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/394175/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-08-23T04:42:13.826Z'
epss: 0.00619
epssPercentile: 0.48336
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.