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CVE-2026-19683— Unencrypted Credential Transmission in Omada Gateway Dynamic DNS Authentication in Omada Gateways

Quick assessment

Affected
TP-Link Systems Inc. ER7212PC v2
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 ER7212PC是中国TP-Link公司的一款多功能路由器。 ER7212PC v2存在加密问题漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。

CVSS 6.3 · Medium EPSS 0.25% · P15

Affected Version Matrix 19

VendorProduct Version RangeStatus
TP-Link Systems Inc ER7406 v1 < 1.3.4 Build 20260625 Rel.43136 affected
TP-Link Systems Inc ER7412-M2 v1 < 1.2.0 Build 20260630 Rel.82947 affected
TP-Link Systems Inc. DR3150 v1 < 1.0.1 Build 20260722 Rel.16854 affected
TP-Link Systems Inc. DR3220v-4G v1 < 1.2.0 Build 20260630 Rel.82652 affected
TP-Link Systems Inc. DR3650v v1 < 1.2.0 Build 20260630 Rel.83311 affected
TP-Link Systems Inc. DR3650v-4G v1 < 1.2.0 Build 20260630 Rel.83347 affected
TP-Link Systems Inc. ER603WP-4G-Outdoor v1 < 1.0.2 Build 20260723 Rel.43271 affected
TP-Link Systems Inc. ER605 v2 < 2.4.4 Build 20260630 Rel.14398 affected
TP-Link Systems Inc. ER605W v2 < 2.0.4 Build 20260723 Rel.43763 affected
TP-Link Systems Inc. ER701-5G-Outdoor v1 < 1.0.3 Build 20260723 Rel.40931 affected
TP-Link Systems Inc. ER703WP-4G-Outdoor v1 < 1.1.7 Build 20260723 Rel.41712 affected
TP-Link Systems Inc. ER706W v1 < 1.2.11 Build 20260723 Rel.41567 affected
TP-Link Systems Inc. ER706W-4G v2 < 2.1.11 Build 20260723 Rel.41624 affected
TP-Link Systems Inc. ER706WP-4G v1 < 1.1.11 Build 20260723 Rel.41624 affected
TP-Link Systems Inc. ER707-M2 v1 < 1.4.4 Build 20260625 Rel.43063 affected
TP-Link Systems Inc. ER7206 v2 < 2.3.5 Build 20260625 Rel.43136 affected
TP-Link Systems Inc. ER7212PC v2 < 2.4.3 Build 20260722 Rel.40250 affected
TP-Link Systems Inc. ER8411 v1 < 1.4.1 Build 20260708 Rel.64832 affected
TP-Link Systems Inc. v1 < 1.2.6 Build 20260723 Rel.41321 affected
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I. Basic Information for CVE-2026-19683

Vulnerability Information
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Vulnerability Title
Unencrypted Credential Transmission in Omada Gateway Dynamic DNS Authentication in Omada Gateways
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability exists in the Dynamic DNS (DDNS) functionality of TP-Link Omada Gateways. During communication with a third-party DDNS service, authentication credentials are transmitted over an unencrypted channel. An attacker who can observe or manipulate traffic between an affected device and the DDNS service may obtain sensitive authentication information or interfere with DDNS update operations. Exploitation requires DDNS to be configured, communication with an external DDNS service, and attacker visibility or control of the relevant network path.  Successful exploitation may result in disclosure of DDNS account credentials, unauthorized access to DDNS management functionality, or modification of DNS records associated with the affected deployment.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文传输
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link ER7212PC 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link ER7212PC是中国TP-Link公司的一款多功能路由器。 ER7212PC v2存在加密问题漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。
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. ER7212PC v2 0 ~ 2.4.3 Build 20260722 Rel.40250 -
TP-Link Systems Inc. ER605 v2 0 ~ 2.4.4 Build 20260630 Rel.14398 -
TP-Link Systems Inc. ER7206 v2 0 ~ 2.3.5 Build 20260625 Rel.43136 -
TP-Link Systems Inc ER7406 v1 0 ~ 1.3.4 Build 20260625 Rel.43136 -
TP-Link Systems Inc. ER707-M2 v1 0 ~ 1.4.4 Build 20260625 Rel.43063 -
TP-Link Systems Inc ER7412-M2 v1 0 ~ 1.2.0 Build 20260630 Rel.82947 -
TP-Link Systems Inc. ER8411 v1 0 ~ 1.4.1 Build 20260708 Rel.64832 -
TP-Link Systems Inc. ER706W v1 0 ~ 1.2.11 Build 20260723 Rel.41567 -
TP-Link Systems Inc. v1 0 ~ 1.2.6 Build 20260723 Rel.41321 -
TP-Link Systems Inc. ER706W-4G v2 0 ~ 2.1.11 Build 20260723 Rel.41624 -
TP-Link Systems Inc. ER706WP-4G v1 0 ~ 1.1.11 Build 20260723 Rel.41624 -
TP-Link Systems Inc. ER703WP-4G-Outdoor v1 0 ~ 1.1.7 Build 20260723 Rel.41712 -
TP-Link Systems Inc. DR3220v-4G v1 0 ~ 1.2.0 Build 20260630 Rel.82652 -
TP-Link Systems Inc. DR3650v v1 0 ~ 1.2.0 Build 20260630 Rel.83311 -
TP-Link Systems Inc. DR3650v-4G v1 0 ~ 1.2.0 Build 20260630 Rel.83347 -
TP-Link Systems Inc. ER603WP-4G-Outdoor v1 0 ~ 1.0.2 Build 20260723 Rel.43271 -
TP-Link Systems Inc. DR3150 v1 0 ~ 1.0.1 Build 20260722 Rel.16854 -
TP-Link Systems Inc. ER701-5G-Outdoor v1 0 ~ 1.0.3 Build 20260723 Rel.40931 -
TP-Link Systems Inc. ER605W v2 0 ~ 2.0.4 Build 20260723 Rel.43763 -

II. Public POCs for CVE-2026-19683

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III. Intelligence Information for CVE-2026-19683

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Vendor Advisories for CVE-2026-19683 (1)

Vendor Pages for CVE-2026-19683 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-08-20 · 3 CVEs total

CVE-2026-19586 9.3 CRITICAL Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gatew
CVE-2026-9033 6.0 MEDIUM Unauthenticated Captive Portal Session Termination and Forced Logout in Omada Gateways

IV. Related Vulnerabilities

Same product: ER7212PC v2
Same vendor: TP-Link Systems Inc.
Same weakness: CWE-319

V. Comments for CVE-2026-19683

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