Medium 5.3Published Sep 10, 2026

CVE-2026-76653Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR600

Updated under an hour ago (Oct 28, 2026, 1:30 AM ET)

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It affects TP-Link Systems Inc. TL-MR6400 v8 and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TP-Link Systems Inc. TL-MR6400 v8

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-126
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TPLink
NVD analysis: Deferred
Record last updated: Sep 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TP-Link Systems Inc. TL-MR6400 v8 tp_link_systems:tl_mr6400_v8 (from the name)	before 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n	CNA record
TP-Link Systems Inc. Archer MR600 tp_link_systems:archer_mr600 (from the name)	from v3 before MR600(EU)_V3_1.4.0 Build 260827; from v2 before MR600(EU)_V2_1.12.0 Build 2600826	CNA record

References

References

https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware	patch
https://www.tp-link.com/en/support/download/archer-mr600/v5/#Firmware	patch
https://www.tp-link.com/us/support/faq/5292/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.