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TI-2026-53561 Aliases CVE-2026-76653GHSA-4rwx-9hrf-jj43

Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR600

Priority LOW 25CWE-126Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A missing authentication vulnerability in the VPN configuration management has been identified in Archer MR600 (v2, v3 & v5) and TL-MR6400 v8 due to improper access control; a remote unauthenticated attacker may be able to access and modify VPN configuration information without valid credentials. Successful exploitation may allow a remote unauthenticated attacker to disclose and modify VPN configuration information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00474 41st percentileScored 2026-11-07
Fix Fixed TL-MR6400 v8 (TP-Link Systems Inc.): 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978nArcher MR600 (TP-Link Systems Inc.): MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V2_1.12.0 Build 2600826

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkTL-MR6400 v8before 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978nPatch availableCNA
TP-LinkArcher MR600v3 to before MR600(EU)_V3_1.4.0 Build 260827; v2 to before MR600(EU)_V2_1.12.0 Build 2600826MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V2_1.12.0 Build 2600826Patch availableCNA
  • TL-MR6400 v8 VendorTP-Link Affected before 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n Fixed in 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n Patch available CNA
  • Archer MR600 VendorTP-Link Affected v3 to before MR600(EU)_V3_1.4.0 Build 260827; v2 to before MR600(EU)_V2_1.12.0 Build 2600826 Fixed in MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V2_1.12.0 Build 2600826 Patch available CNA

Remediation

  • Fix · CNA TL-MR6400 v8 (TP-Link Systems Inc.) Fixed in 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n
  • Fix · CNA Archer MR600 (TP-Link Systems Inc.) Fixed in MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V2_1.12.0 Build 2600826

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TP-Link Systems Archer MR600, TL-MR6400 v8 — tp-link.com/us/support/faq/5292

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-53560 Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600Priority LOW 23
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-76653
  2. 2026-10-03 Alias added: GHSA-4rwx-9hrf-jj43

References

Patch 2

Advisory 1

  • TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
  • TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
  • TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
  • TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
  • TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
  • TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5
See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences