A vulnerability was found in TRENDnet TEW-755AP up to 20260702. (CVE-2026-76589)
Description
A stack-based buffer overflow vulnerability exists in the TRENDnet TEW-755AP device up to version 20260702 in the function FUN_401000 of /sbin/mycli. The vulnerability is triggered by manipulation of the ssid argument and can be exploited remotely. The vulnerability has a high CVSS score of 9.9 and an exploit has been publicly disclosed.
CVSS v3.1
Score 9.9critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76589 is a stack-based buffer overflow vulnerability in the TRENDnet TEW-755AP device firmware up to version 20260702. The flaw resides in the function FUN_401000 within the /sbin/mycli binary, where improper handling of the ssid argument allows an attacker to overflow the stack. This vulnerability can be exploited remotely and has a CVSS 3.1 base score of 9.9, indicating critical impact on confidentiality, integrity, and availability. Public exploit code is available, but there is no vendor advisory or patch information provided.
Potential Impact
Successful exploitation of this vulnerability can lead to remote code execution with elevated privileges due to stack-based buffer overflow. This can compromise device confidentiality, integrity, and availability. Given the high CVSS score and public exploit availability, the vulnerability poses a significant risk to affected devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is currently available. Until a patch is released, affected users should consider limiting network exposure of the device and monitor for updates from TRENDnet.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qjr2-7w3m-c4fr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-76589"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a870a80acd9273b49b597c1
Added to database: 08/20/2026, 14:09:04 UTC
Last enriched: 08/20/2026, 14:41:00 UTC
Last updated: 10/05/2026, 06:48:18 UTC
Views: 43
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