by Kastro
Paper/Archive/CVE-2026-19586

CVE-2026-19586

TP-Link Systems Inc. ER7212PC v2 — Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways

EPSS 6%CVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 93.0.930 × 2018.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt.  Successful exploitation may allow arbitrary command execution, potentially leading to full compromise of the affected device.

Affected

ProductAffectedFixed inSource
ER7212PC v2< 2.4.3 Build 20260722 Rel.402502.4.3 Build 20260722 Rel.40250CNA
ER605 v2< 2.4.4 Build 20260630 Rel.143982.4.4 Build 20260630 Rel.14398CNA
ER7206 v2< 2.3.5 Build 20260625 Rel.431362.3.5 Build 20260625 Rel.43136CNA
ER7406 v1< 1.3.4 Build 20260625 Rel.431361.3.4 Build 20260625 Rel.43136CNA
ER707-M2 v1< 1.4.4 Build 20260625 Rel.430631.4.4 Build 20260625 Rel.43063CNA
ER7412-M2 v1< 1.2.0 Build 20260630 Rel.829471.2.0 Build 20260630 Rel.82947CNA
ER8411 v1< 1.4.1 Build 20260708 Rel.648321.4.1 Build 20260708 Rel.64832CNA
ER706W v1< 1.2.11 Build 20260723 Rel.415671.2.11 Build 20260723 Rel.41567CNA
v1< 1.2.6 Build 20260723 Rel.413211.2.6 Build 20260723 Rel.41321CNA
ER706W-4G v2< 2.1.11 Build 20260723 Rel.416242.1.11 Build 20260723 Rel.41624CNA
ER706WP-4G v1< 1.1.11 Build 20260723 Rel.416241.1.11 Build 20260723 Rel.41624CNA
ER703WP-4G-Outdoor v1< 1.1.7 Build 20260723 Rel.417121.1.7 Build 20260723 Rel.41712CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
TPLink (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchomadanetworks.com/en/support/downloadpatchomadanetworks.com/us/support/downloadadvisorytp-link.com/us/support/faq/5256writeupmattg.systems/posts/cve-2026-19586