Background exploitation KEV catalog
CVE-2019-19356

Netis WF2419 Devices Remote Code Execution Vulnerability

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…

CheckOps priority index
5.6/10 Patch within 7 days
Severity7.5
Probability2.8
Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 28.1% higher than 98.1% of CVEs
CVSS 3.1 7.5 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:
Exploited for 1,829 days 03 Nov 2021
CISA due date 03 May 2022 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep06 Oct16 Oct26 Oct05 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

  • KEV catalog (CISA)03 Nov 2021
  • Exploited in EUVD (ENISA)03 Nov 2021
  • Used by ransomwareno
  • EPSS above 10 %28.1%
  • No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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

WF2419 Devices
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

  5. EPSS peak: 28.2%

References

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities