How severe is CVE-2026-19586?

CVE-2026-19586 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-19586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-19586?

CVE-2026-19586 primarily affects Tp-link Er7212pc Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-19586?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-19586 published?

CVE-2026-19586 was published on 2026-08-20 and last updated on 2026-09-03.

CVE-2026-19586

CVE-2026-19586 is a critical-severity vulnerability in Tp-link Er7212pc Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Tp-link Er7212pc Firmware
Published: 2026-08-20
Last modified: 2026-09-03

Description

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.

Frequently asked questions

What is CVE-2026-19586?: 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.
How severe is CVE-2026-19586?: CVE-2026-19586 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-19586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-19586?: CVE-2026-19586 primarily affects Tp-link Er7212pc Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-19586?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-19586 published?: CVE-2026-19586 was published on 2026-08-20 and last updated on 2026-09-03.

References

Affected products (18)

cpe:2.3:o:tp-link:er7212pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er605_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er605w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7206_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7406_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er707-m2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7412-m2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er8411_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706wp-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er703wp-4g-outdoor_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er603wp-4g-outdoor_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er701-5g-outdoor_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:dr3220v-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:dr3650v_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:dr3650v-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:dr3150_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Er7212pc Firmware

CVE-2025-7851 — Critical (CVSS 9.8): An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways.
CVE-2025-6542 — Critical (CVSS 9.8): An arbitrary OS command may be executed on the product by a remote unauthenticated attacker.
CVE-2025-6541 — High (CVSS 8.8): An arbitrary OS command may be executed on the product by the user who can log in to the web management interface.
CVE-2026-19683 — High (CVSS 7.4): A vulnerability exists in the Dynamic DNS (DDNS) functionality of TP-Link Omada Gateways. During communication with a…
CVE-2025-7850 — High (CVSS 7.2): A command injection vulnerability may be exploited after the admin's authentication on the web portal on Omada gateways.
CVE-2025-9290 — Medium (CVSS 5.9): An authentication weakness was identified in Omada Controllers, Gateways and Access Points, controller-device adoption…

All CVEs affecting Tp-link Er7212pc Firmware →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-100382 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Wikimedia…
CVE-2026-77521 — Critical (CVSS 10.0): MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.5-lts, assistants with a tool, MCP tool,…
CVE-2026-82004 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-76197 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-76195 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS…
CVE-2026-19188 — Critical (CVSS 10.0): A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The…

Browse all CWE-78 (OS Command Injection) vulnerabilities →