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CVE-2026-76652— Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600

Quick assessment

Affected
TP-Link Systems Inc. TL-MR6400 v8
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.

在 Archer MR600（v2、v3 及 v5 版本）和 TL-MR6400 v8 版本中，文件上传功能中存在一个经过身份验证的目录遍历漏洞。由于对用户提供的文件信息缺乏足够的验证，拥有受影响上传功能访问权限的经过身份验证的远程攻击者可以上传一个经过精心构造的文件，使其被写入到预期目录之外。 成功利用该漏洞可能允许经过身份验证的远程攻击者将文件写入非预期位置，从而有可能覆盖或修改可被受影响服务访问的文件；目前尚未证实能够执行任意代码。

CVSS 4.8 · Medium

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2026-76652

Vulnerability Information
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Vulnerability Title
Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated directory traversal vulnerability in file upload functionality has been identified in Archer MR600 (v2, v3 & v5) and TL-MR6400 v8. Due to insufficient validation of user-supplied file information, an authenticated remote attacker with access to the affected upload functionality could upload a specially crafted file and cause it to be written outside the intended directory. Successful exploitation could allow an authenticated remote attacker to write files to unintended locations, potentially overwriting or modifying files accessible to the affected service; arbitrary code execution has not been demonstrated.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. TL-MR6400 v8 0 ~ 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n -
TP-Link Systems Inc. Archer MR600 v3 ~ MR600(EU)_V3_1.4.0 Build 260827 -

II. Public POCs for CVE-2026-76652

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III. Intelligence Information for CVE-2026-76652

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Vendor Advisories for CVE-2026-76652 (1)

Vendor Pages for CVE-2026-76652 (2)

Same Patch Batch · TP-Link Systems Inc. · 2026-09-10 · 4 CVEs total

CVE-2026-17176 7.7 HIGH OS command injection Vulnerability in Deco BE11000
CVE-2026-84941 6.9 MEDIUM Omada Controller XML External Entity (XXE) Injection in SAML IdP Metadata Parsing Leading
CVE-2026-76653 5.3 MEDIUM Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR6

IV. Related Vulnerabilities

Same product: TL-MR6400 v8
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-22

V. Comments for CVE-2026-76652

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