CVE-2025-15542

Medium

Description

Improper handling of exceptional conditions in VX800v v1.0 in SIP processing allows an attacker to flood the device with crafted INVITE messages, blocking all voice lines and causing a denial of service on incoming calls.

SeverityMedium

CVSS5.3

Exploit probability—

Product

Tp-link Vx800v Firmware

PublishedJan 29, 2026

First seenJan 29, 2026

Weakness typeCWE-754CWE-754

How to fix

Update

tp-link vx800v_firmware800.0.12 or later

Patches

tp-link.com/de/support/download/vx800v/#Firmware

Vendor advisories

tp-link.com/us/support/faq/4930/

Affected products

Product	Affected versions	Fixed in
tp-link vx800v_firmware	v < 800.0.12	800.0.12

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