Vulnerability · Published Aug 19, 2026 · Assigned by VulDB
CVE-2026-76589TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow
Critical 9.9
In plain English
A critical-severity stack buffer overflow in TEW-755AP from TRENDnet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.9%top 41.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in TRENDnet TEW-755AP up to 20260702. Affected is the function FUN_401000 of the file /sbin/mycli. The manipulation of the argument ssid results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-393085 | TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow vdb-entry, technical-description
- VDB-393085 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-76589 | CVE Analysis and Report third-party-advisory
- Submit #877845 | TRENDnet TEW-755AP TEW-755AP Stack-based Buffer Overflow third-party-advisory
- https://github.com/meishigana/CVE/tree/main/team15_20260702/13_755ap-mycli-bof related
- https://github.com/meishigana/CVE/blob/main/team15_20260702/13_755ap-mycli-bof/poc/poc-mycli-overflow.py exploit