How severe is CVE-2019-19356?

CVE-2019-19356 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which products are affected by CVE-2019-19356?

Affected package information for CVE-2019-19356 is not yet fully mapped. Check the official advisory links for details.

How do I patch CVE-2019-19356?

No patch has shipped for CVE-2019-19356 yet — track the netis-systems wf2419 firmware advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2019-19356 across my infrastructure?

Inventory every netis-systems wf2419 firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2019-19356 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2019-19356?

O3 detects and blocks CVE-2019-19356 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2019-19356 actively exploited in the wild?

Yes. There are 6 known exploit references for CVE-2019-19356, including 5 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-19356?

CVE-2019-19356 has an EPSS (Exploit Prediction Scoring System) score of 28.2%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2019-19356 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2019-19356 (Netis WF2419 Devices Remote Code Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-05-03. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2019-19356?

CVE-2019-19356 is classified as OS Command Injection (CWE-78). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2019-19356?

CVE-2019-19356 affects netis-systems wf2419 firmware (2 versions, e.g. 1.2.31805, 2.2.36123). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2019-19356 published, and has it been updated?

CVE-2019-19356 was published on February 7, 2020 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2021-11-03 — agencies required to remediate by 2022-05-03

CVE-2019-19356

HIGH

Netis WF2419 is vulnerable to authenticated Remote Code Execution (RCE) as root through the router Web management page. The vulnerability has been found in firmware version V1.2.31805…

Published

Feb 7, 2020

Updated

Jun 17, 2026

Affected

0 pkgs

Patched

None yet

Exploits

6 known

EPSS Exploitation Probability

via FIRST.org ↗

28.2%probability of exploitation in next 30 days

Moderate Risk98th percentile+0.21%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Netis WF2419 is vulnerable to authenticated Remote Code Execution (RCE) as root through the router Web management page. The vulnerability has been found in firmware version V1.2.31805 and V2.2.36123. After one is connected to this page, it is possible to execute system commands as root through the tracert diagnostic tool because of lack of user input sanitizing.

Affected Products

1 product · 2 configurations

wf2419 firmwarenetis-systems

2 versions

1.2.318052.2.36123

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.