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Fencer Vulns
critical 9.8

CVE-2026-19586 json

Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways

published 2026-08-20 2 mo ago modified 2026-10-26 14 d ago also EUVD-2026-63544

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.8%
EPSS 5.8% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

5.77% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • mattg.systems https://mattg.systems/posts/cve-2026-19586/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • TP-Link Systems Inc. ER7212PC v2
  • TP-Link Systems Inc. ER605 v2
  • TP-Link Systems Inc. ER7206 v2
  • TP-Link Systems Inc ER7406 v1
  • TP-Link Systems Inc. ER707-M2 v1
  • TP-Link Systems Inc ER7412-M2 v1
  • TP-Link Systems Inc. ER8411 v1
  • TP-Link Systems Inc. ER706W v1
  • TP-Link Systems Inc. v1
  • TP-Link Systems Inc. ER706W-4G v2
  • TP-Link Systems Inc. ER706WP-4G v1
  • TP-Link Systems Inc. ER703WP-4G-Outdoor v1
  • TP-Link Systems Inc. DR3220v-4G v1
  • TP-Link Systems Inc. DR3650v v1
  • TP-Link Systems Inc. DR3650v-4G v1
  • TP-Link Systems Inc. ER603WP-4G-Outdoor v1
  • TP-Link Systems Inc. DR3150 v1
  • TP-Link Systems Inc. ER701-5G-Outdoor v1
  • TP-Link Systems Inc. ER605W v2

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.