CVE-2026-76653: CWE-126 in TP-Link Systems Inc. TL-MR6400 v8
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.
AI Analysis
Technical Summary
This vulnerability (CWE-126: Buffer Over-read) affects TP-Link TL-MR6400 v8 and Archer MR600 (v2, v3, v5) devices. Due to improper access control in the VPN configuration management interface, remote attackers without authentication can read and modify VPN configuration data. The CVSS 4.0 base score is 5.3 (medium), reflecting the attack vector as adjacent network with low attack complexity and no privileges or user interaction required. No known exploits or patches are currently documented.
Potential Impact
Successful exploitation allows a remote unauthenticated attacker to disclose and modify VPN configuration information on affected devices. This could compromise VPN integrity and confidentiality, potentially impacting secure communications relying on these configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict network access to the VPN configuration interface to trusted users and networks to reduce exposure.
CVE-2026-76653: CWE-126 in TP-Link Systems Inc. TL-MR6400 v8
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.
CVSS v4.0
Score 5.3medium
Affected software
TP-Link Systems Inc.
TL-MR6400 v8
TP-Link Systems Inc.
Archer MR600
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-126: Buffer Over-read) affects TP-Link TL-MR6400 v8 and Archer MR600 (v2, v3, v5) devices. Due to improper access control in the VPN configuration management interface, remote attackers without authentication can read and modify VPN configuration data. The CVSS 4.0 base score is 5.3 (medium), reflecting the attack vector as adjacent network with low attack complexity and no privileges or user interaction required. No known exploits or patches are currently documented.
Potential Impact
Successful exploitation allows a remote unauthenticated attacker to disclose and modify VPN configuration information on affected devices. This could compromise VPN integrity and confidentiality, potentially impacting secure communications relying on these configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict network access to the VPN configuration interface to trusted users and networks to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-08-19T15:49:30.548Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa313df91cc7f3848b03efc
Added to database: 09/10/2026, 20:32:31 UTC
Last enriched: 09/10/2026, 20:47:23 UTC
Last updated: 09/10/2026, 22:12:32 UTC
Views: 7
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