CVE-2026-75976: TRENDnet TEW-823DRU NVRAM wan.cgi strcpy stack-based overflow

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-19 · updated 2026-10-22
Weakness: CWE-119

Description

A weakness has been identified in TRENDnet TEW-823DRU 1.1.02b01. Impacted is the function strcpy of the file /cgi-bin/wan.cgi of the component NVRAM. This manipulation of the argument wan_l2tp_password causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

TRENDnet TEW-823DRU: 1.1.02b01

References

https://github.com/meishigana/CVE/blob/main/team15_20260702/10_823dru-rc-bof/poc/poc-rc-overflow.py
https://github.com/meishigana/CVE/tree/main/team15_20260702/10_823dru-rc-bof
https://vuldb.com/cve/CVE-2026-75976
https://vuldb.com/submit/877796
https://vuldb.com/vuln/391892
https://vuldb.com/vuln/391892/cti

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