CVE-2025-15542

Denial of Service (DoS) of VoIP Communication on TP-Link VX800v

Published Jan 29, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tp-link vx800v Firmware
CPEs cpe:2.3:h:tp-link:vx800v:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:vx800v_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tp-link vx800v Firmware
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link vx800v
Vendors & Products Tp-link
Tp-link vx800v
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Denial of Service (DoS) of VoIP Communication on TP-Link VX800v
Weaknesses CWE-754
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Jan 29, 2026, 6:47 PM
Reserved
Jan 20, 2026, 9:50 PM
Status
Analyzed
Published
Jan 29, 2026, 7:16 PM
Modified
Jun 17, 2026, 8:37 AM