CVE-2026-76590: TRENDnet TEW-755AP ssi wan.cgi 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 2026-08-21
Weakness: CWE-119

Description

A vulnerability was identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

Affected products

TRENDnet TEW-755AP: 20260702

References

https://github.com/meishigana/CVE/blob/main/team15_20260702/15_755ap-ssi-bof/poc/poc-ssi-overflow.py
https://github.com/meishigana/CVE/tree/main/team15_20260702/15_755ap-ssi-bof
https://vuldb.com/cve/CVE-2026-76590
https://vuldb.com/submit/877850
https://vuldb.com/vuln/393087
https://vuldb.com/vuln/393087/cti

Get alerted when CVE-2026-76590 or the next vulnerability affects your stack