High severity · published Aug 21, 2026
CVE-2026-17250
Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling
8.5
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TV
TL-MR6400 v7.0 · TP-Link Systems Inc.
before 1.9.0 Build 260714 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-17250
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-17250
www.tp-link.com
https://www.tp-link.com/en/support/download/tl-mr6400/v7/#Firmware
www.tp-link.com
https://www.tp-link.com/tw/support/download/tl-mr6400/v7/#Firmware
www.tp-link.com
https://www.tp-link.com/us/support/faq/5259/
More from TL-MR6400 v7.0
7.1
CVE-2026-17252
Unauthenticated Denial of Service via Composed HTTP Parsing and Stack-Based Out-of-Bounds Write Vulnerability in TL-MR6400 Web Management Interface
7.1
CVE-2026-17251
Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing