Weakness in Application Layer Encryption in VX800v from TP-Link
CVE-2025-13399

7.7HIGH

Key Information:

Vendor

Tp-link Systems Inc.

Status
Vx800v V1.0
Vendor
CVE Published:
29 January 2026

What is CVE-2025-13399?

A vulnerability in the web interface of the VX800v v1.0 exposes a flaw in its application layer encryption. This weakness allows an adjacent attacker to potentially brute force a weak AES key, enabling them to decrypt intercepted network traffic. While exploitation requires close network proximity, it does not necessitate authentication, presenting a significant risk to the confidentiality, integrity, and availability of sensitive data being transmitted over the network.

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Deploy the Patch

Affected Version(s)

VX800v v1.0 Linux 0 < 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)

References

https://www.tp-link.com/de/support/download/vx800v/#Firmware
patch
https://www.tp-link.com/us/support/faq/4930/
vendor-advisory

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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