Vulnerability · Published Aug 28, 2026 · Assigned by TPLink
CVE-2026-75118http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow
High 8.7
In plain English
A high-severity stack buffer overflow in TL-MR100 v3.20 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Official description
A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution. Successful exploitation can overwrite saved control-flow data on the httpd process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | TL-MR100 v3.20 | 0 – before (EU)_1.3.0 Build 260609 |
Weakness: CWE-121 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N