CVE-2025-15542— Denial of Service (DoS) of VoIP Communication on TP-Link VX800v
Quick assessment
Affected
TP-Link Systems Inc. VX800v v1.0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
TP-Link VX800v是中国普联（TP-Link）公司的一款VoIP网关。 TP-Link VX800v 1.0版本存在安全漏洞，该漏洞源于SIP处理中异常条件处理不当，可能导致攻击者用特制INVITE消息淹没设备，从而造成拒绝服务。
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I. Basic Information for CVE-2025-15542
Vulnerability Information
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Vulnerability Title
Denial of Service (DoS) of VoIP Communication on TP-Link VX800v
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link VX800v 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link VX800v是中国普联（TP-Link）公司的一款VoIP网关。 TP-Link VX800v 1.0版本存在安全漏洞，该漏洞源于SIP处理中异常条件处理不当，可能导致攻击者用特制INVITE消息淹没设备，从而造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TP-Link Systems Inc. | VX800v v1.0 | 0 ~ 800.0.12 (0.12.0 3.0.0 v603c.0 Build 250912) | - |
|
II. Public POCs for CVE-2025-15542
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2025-15542 (1)
Same Patch Batch · TP-Link Systems Inc. · 2026-01-29 · 7 CVEs total
| CVE-2026-1457 | Authenticated RCE Vulnerability Due to Buffer Overflow on TP-Link VIGI C385 | |
| CVE-2025-15548 | Missing Application-Layer Encryption in Web Interface Endpoints on TP-Link VX800v | |
| CVE-2025-15543 | Read-Only Root Access via USB Storage Device in TP-Link VX800v | |
| CVE-2025-15541 | Access to System Files via SFTP on TP-Link VX800v | |
| CVE-2025-13399 | Insecure Encryption in Communication with the Web Interface on TP-Link VX800v | |
| CVE-2025-15545 | Insufficient Backup File Upload Input Validation on TP-Link Archer RE605X |
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V. Comments for CVE-2025-15542
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