Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600 (CVE-2026-76652) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-76652

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

Answer in brief

CVE-2026-76652 records a Unknown severity vulnerability in Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./Archer MR600 (generic), TP-Link Systems Inc./TL-MR6400 v8 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link Systems Inc./Archer MR600 (generic), TP-Link Systems Inc./TL-MR6400 v8 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TP-Link Systems Inc./Archer MR600generic	>=v3 <MR600(EU)_V3_1.4.0 Build 260827 \|\| >=v5 <MR600(EU)_V5_1.9.0 Build 260805 \|\| >=v2 <MR600(EU)_V2_1.12.0 Build 2600826	MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V5_1.9.0 Build 260805, MR600(EU)_V2_1.12.0 Build 2600826
TP-Link Systems Inc./TL-MR6400 v8generic	>=0 <1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n	1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n

Recommended response

Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./Archer MR600, TP-Link Systems Inc./TL-MR6400 v8.
Review the reported fix. Update TP-Link Systems Inc./Archer MR600 to MR600(EU)_V3_1.4.0 Build 260827; TP-Link Systems Inc./TL-MR6400 v8 to 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.