Denial of Service Vulnerability in VX800v Voice Device by TP-Link
CVE-2025-15542

6.3MEDIUM

Key Information:

Vendor

Tp-link Systems Inc.

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

What is CVE-2025-15542?

The VX800v v1.0 by TP-Link is susceptible to a denial of service due to improper handling of exceptional conditions during SIP processing. Attackers can exploit this vulnerability by sending specially crafted INVITE messages, resulting in a flood that blocks all voice lines. This disruption prevents incoming calls, severely impacting communication capabilities for users of the affected device.

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Deploy the Patch

Affected Version(s)

VX800v v1.0 Linux 0 < 800.0.12 (0.12.0 3.0.0 v603c.0 Build 250912)

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:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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