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Known exploited · D-Link

CVE-2019-16057: D-Link DNS-320 Remote Code Execution Vulnerability

What it is

The login_mgr.cgi script in D-Link DNS-320 is vulnerable to remote code execution.

Added April 15, 2022Due May 6, 2022CISA KEV catalog 2026.10.01

Vendor
D-Link
Product
DNS-320 Storage Device
Added to KEV
April 15, 2022
CISA due date
May 6, 2022
Ransomware use
Known

What CISA requires

The impacted product is end-of-life and should be disconnected if still in use.

Forensic triage

No

What to do now

  1. Find every instance of DNS-320 Storage Device you run, including the forgotten ones, and check its version against the vendor advisory.
  2. Apply the vendor's fix or mitigation, before May 6, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
  3. Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
  4. Until every instance is patched, block the attack at the edge: a WAF in blocking mode stops OS command injection payloads, including Shellshock.

References

CVE-2019-16057 in the National Vulnerability Database

The Dome

Block it at the edge while you patch

The Dome's WAF runs the OWASP Core Rule Set in blocking mode and stops OS command injection payloads, including Shellshock before they reach your application.

See the Dome

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Source: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.