Weak AES Key Brute Force in VX800v Web Interface Encryption

Publication date: 2026-01-29

Last updated on: 2026-03-09

Assigner: TPLink

Description

A weakness in the web interface’s application layer encryption in VX800v v1.0 allows an adjacent attacker to brute force the weak AES key and decrypt intercepted traffic. Successful exploitation requires network proximity but no authentication, and may result in high impact to confidentiality, integrity, and availability of transmitted data.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-29

Last Modified

2026-03-09

Generated

2026-07-06

AI Q&A

2026-01-29

EPSS Evaluated

2026-07-05

NVD

CVE-2025-13399

EUVD

EUVD-2025-206515

Affected Vendors & Products

Vendor	Product	Version / Range
tp-link	vx800v_firmware	to 800.0.11 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-331	The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Attack-Flow Graph

Executive Summary

This vulnerability is a weakness in the application layer encryption of the web interface in VX800v version 1.0. It allows an attacker who is on the same or adjacent network to brute force the weak AES encryption key and decrypt the intercepted traffic. Exploiting this vulnerability does not require any authentication but does require network proximity.

Impact Analysis

If exploited, this vulnerability can have a high impact on the confidentiality, integrity, and availability of the transmitted data. An attacker could decrypt sensitive information, potentially alter data, or disrupt communication.

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