CVE-2025-13399

Insecure Encryption in Communication with the Web Interface on TP-Link VX800v

HIGH
8.8
CVSS Score
Published: January 29, 2026 at 06:05 PM UTC
Updated: June 17, 2026 at 08:34 AM UTC
2 products affected across 1 vendorVX800V FirmwareVX800v

Using VX800v v1.0 by TP-Link Systems Inc.?

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Severity
HIGH8.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 800.0.11
tp-link-vx800v (same device)
v < 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)
Affected range stops below 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702), so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-331

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