CVE-2026-76653 Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR600
Remote attackers can access and modify VPN settings on TP-Link routers without authentication due to missing access controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76653?
CVE-2026-76653 is a medium-severity missing authorization vulnerability in TP-Link Systems Inc. Archer MR600, published on 10 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-126
Which versions are affected by CVE-2026-76653?
How do I fix CVE-2026-76653?
No fix has been published for CVE-2026-76653 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-76653 being exploited?
There is no known exploitation of CVE-2026-76653 in the wild and no public exploit code.
Sources
Also known as GHSA-4rwx-9hrf-jj43.