Medium 6.3Published Jan 29, 2026

CVE-2025-15542Denial of Service (DoS) of VoIP Communication on TP-Link VX800v

Updated under an hour ago (Oct 27, 2026, 3:30 AM ET)

Does this affect you?

It affects TP-Link Systems Inc. VX800v v1.0 and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TP-Link Systems Inc. VX800v v1.0

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-754
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TPLink
NVD analysis: Analyzed
Record last updated: Jan 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TP-Link Systems Inc. VX800v v1.0 tp_link_systems:vx800v_v1.0 (from the name)	before 800.0.12 (0.12.0 3.0.0 v603c.0 Build 250912)	CNA record
tp-link vx800v_firmware tp-link:vx800v_firmware	before 800.0.12	NVD

References

References

https://www.tp-link.com/de/support/download/vx800v/#Firmware	patch, product
https://www.tp-link.com/us/support/faq/4930/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.