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CVE-2025-13399

TP-Link Vx800v Firmware vulnerability

8.8 HIGHEPSS 0.17%
  1. Published29 Jan 2026

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 3.1 breakdown

Attack vectorAdjacent
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

TP-Link Vx800v Firmware< 800.0.11

Remediation

Fixed in
TP-Link Vx800v Firmware≥ 800.0.11

References

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Frequently asked

Is CVE-2025-13399 being actively exploited?

CVE-2025-13399 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.17%.

How severe is CVE-2025-13399?

CVE-2025-13399 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.17% probability of exploitation.

Which products are affected by CVE-2025-13399?

Affected products include TP-Link Vx800v Firmware.

How do I fix CVE-2025-13399?

Upgrade affected software to a fixed version, for example TP-Link Vx800v Firmware 800.0.11 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-13399 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.