CVE-2026-76652 (GCVE-0-2026-76652)

Vulnerability from cvelistv5 – Published: 2026-09-10 20:12 – Updated: 2026-09-10 20:27
VLAI
Title
Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600
Summary
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.
Severity
4.8 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:26 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
TPLink CNA under the mitre root
CNA scorecard B 87/100 over 106 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
TP-Link Systems Inc. TL-MR6400 v8 Affected: 0 , < 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n (custom)
guessed Create a notification for this product.
TP-Link Systems Inc. Archer MR600 Affected: v3 , < MR600(EU)_V3_1.4.0 Build 260827 (custom)
Affected: v5 , < MR600(EU)_V5_1.9.0 Build 260805 (custom)
Affected: v2 , < MR600(EU)_V2_1.12.0 Build 2600826 (custom)
guessed Create a notification for this product.
Credits
Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications
Show details on NVD website
To clipboard 

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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