Vulnerability · Published Aug 21, 2026 · Assigned by TPLink
CVE-2026-17250Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling
High 8.5
In plain English
A high-severity stack buffer overflow in TL-MR6400 v7.0 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 0.3% (higher than 22% of all known vulnerabilities).
Official description
A stack-based buffer overflow vulnerability exists in the firmware update functionality of TL-MR6400 v7 due to unsafe processing of attacker-controlled metadata within a firmware image. Successful exploitation may allow an authenticated attacker to trigger memory corruption and execute arbitrary code on the affected device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | TL-MR6400 v7.0 | 0 – before 1.9.0 Build 260714 |
Weakness: CWE-121 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N