CVE-2026-17250 Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling
An authenticated attacker can execute arbitrary code on TP-Link TL-MR6400 v7 routers via a stack-based buffer overflow in firmware update handling.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17250?
CVE-2026-17250 is a high-severity memory corruption vulnerability in TP-Link Systems Inc. TL-MR6400 v7.0, published on 21 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-121
Which versions are affected by CVE-2026-17250?
How do I fix CVE-2026-17250?
No fix has been published for CVE-2026-17250 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-17250 being exploited?
There is no known exploitation of CVE-2026-17250 in the wild and no public exploit code.
Sources
Also known as GHSA-82fj-885j-3xg6.