# CVE-2026-77946

## Summary

- **CVE ID:** CVE-2026-77946
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P)
- **CWE:** CWE-121, CWE-119
- **Published:** Aug 22, 2026
- **Last Modified:** Aug 26, 2026

## Description

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.

## Affected Products

- TRENDnet — TEW-821DAP (2.2.01b05)

## References

- [CNA](https://vuldb.com/cve/CVE-2026-77946)
- [CNA](https://vuldb.com/vuln/394175)
- [CNA](https://vuldb.com/vuln/394175/cti)
- [CNA](https://vuldb.com/submit/881252)
- [CNA](https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.62%
- **EPSS Percentile:** 48.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._