VPN configuration disclosure and modification via missing authentication
Published Sep 10, 2026 · Updated Sep 10, 2026
Missing authentication in TP-Link TL-MR6400 v8 and Archer MR600 v2 and v3 allows remote attackers to read and modify VPN settings. The VPN configuration management interface applies improper access control and accepts configuration access and changes without valid credentials. Reachability requires adjacent-network access to the router management interface; exploitation exposes and alters VPN configuration data without affecting availability.
Summary
What happened
Missing authentication in TP-Link TL-MR6400 v8 and Archer MR600 v2 and v3 allows remote attackers to read and modify VPN settings. The VPN configuration management interface applies improper access control and accepts configuration access and changes without valid credentials. Reachability requires adjacent-network access to the router management interface; exploitation exposes and alters VPN configuration data without affecting availability.
The record
- CVE
- CVE-2026-76653
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- TP-Link Systems Inc.
- Product
- TL-MR6400
- Classifications
- CWE-126, CAPEC-126, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo