CVE-2026-17252: CWE-787 Out-of-bounds write in TP-Link Systems Inc. TL-MR6400 v7.0
Description
A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request. Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.
CVSS v4.0
Score 7.1high
Affected software
TP-Link Systems Inc.
TL-MR6400 v7.0
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) exists in TP-Link TL-MR6400 v7 routers within the login request handling functionality of the administrative web interface. It allows an unauthenticated attacker on an adjacent network to trigger a stack-based out-of-bounds write by sending a malformed HTTP request. The impact of exploitation is a denial-of-service condition caused by crashing the web service process, leading to temporary loss of access to the router's management interface. No patch or official remediation has been disclosed by the vendor as of the publication date. There are no known exploits in the wild.
Potential Impact
Exploitation results in denial-of-service by crashing the router's web management interface process, causing temporary loss of administrative access. There is no indication of code execution or data compromise from the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, limit access to the router's administrative interface to trusted networks and monitor for unusual HTTP requests that could trigger the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-07-24T22:03:13.178Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a888a87acd9273b4977388f
Added to database: 08/21/2026, 17:27:35 UTC
Last enriched: 09/07/2026, 12:37:28 UTC
Last updated: 10/05/2026, 18:48:17 UTC
Views: 70
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