CVE-2026-77946CWE-119CWE-121

CVE-2026-77946

Critical · published August 22, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
63.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
10.0 · 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
EPSS
0.01020 · 63.1th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-08-22T15:16Z
References (5)
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md · [email protected]https://vuldb.com/cve/CVE-2026-77946 · [email protected]https://vuldb.com/submit/881252 · [email protected]https://vuldb.com/vuln/394175 · [email protected]https://vuldb.com/vuln/394175/cti · [email protected]
EPSS history
Timeline
  • 22 AUG 11:00Z
    TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow
    cvelistv5