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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

Quick assessment

Affected
TP-Link Systems Inc. TL-MR6400 v7.0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-Link TL-MR6400 v7 路由器的管理 Web 界面中的登录请求处理功能存在栈溢出写越界漏洞。未经认证的相邻攻击者可以通过发送特制的畸形 HTTP 请求触发此漏洞。 成功利用该漏洞可能导致 Web 服务进程崩溃，从而造成拒绝服务（DoS）状态，并暂时无法访问路由器的 Web 管理界面。

CVSS 7.1 · High EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TP-Link Systems Inc. TL-MR6400 v7.0 < 1.9.0 Build 260714 affected
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I. Basic Information for CVE-2026-17252

Vulnerability Information
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Vulnerability Title
Unauthenticated Denial of Service via Composed HTTP Parsing and Stack-Based Out-of-Bounds Write Vulnerability in TL-MR6400 Web Management Interface
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. TL-MR6400 v7.0 0 ~ 1.9.0 Build 260714 -

II. Public POCs for CVE-2026-17252

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III. Intelligence Information for CVE-2026-17252

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Vendor Advisories for CVE-2026-17252 (1)

Vendor Pages for CVE-2026-17252 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-08-21 · 3 CVEs total

CVE-2026-17250 8.5 HIGH Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Han
CVE-2026-17251 7.1 HIGH Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing

IV. Related Vulnerabilities

Same product: TL-MR6400 v7.0
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-787

V. Comments for CVE-2026-17252

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