Security readout for executives and security teams
Plain-English summary
CVE-2019-16057 is a critical flaw in D-Link DNS-320 NAS login handling that can allow remote command execution. For executives, the business risk is full device compromise, data exposure, tampering, and service disruption if vulnerable devices remain reachable.
Executive priority
Treat this as urgent for any exposed or production DNS-320 device. Known exploitation plus unauthenticated remote command execution creates a realistic path to full device compromise and potential data loss.
Technical view
The CVE describes command injection in login_mgr.cgi on D-Link DNS-320 through 2.05.B10. CVSS 3.1 is 9.8: network-accessible, low complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact. CWE-78 applies.
Likely exposure
Likely exposure is D-Link DNS-320 devices running firmware through 2.05.B10, especially if management or NAS services are reachable from untrusted networks. The bundle's structured affected product data is incomplete, so inventory confirmation is required.
Exploitation context
CISA KEV status indicates known exploitation. The provided bundle does not identify exploit timing, threat actors, prevalence, or campaign details. A public research reference exists, but this assessment does not rely on or repeat exploit mechanics.
Researcher notes
Evidence supports critical severity, CWE-78, unauthenticated network attack characteristics, and KEV exploitation status. The bundle does not provide a definitive vendor patch, CPE list, exploit prevalence, or forensic indicators, so validation should remain source-constrained.
Mitigation direction
- Identify all D-Link DNS-320 assets and firmware versions.
- Check D-Link or vendor guidance for available fixes or replacement advice.
- Remove management interfaces from internet exposure immediately.
- Restrict access to trusted administrative networks only.
- Retire or replace unsupported vulnerable devices if no fix exists.
- Monitor affected devices for suspicious process, login, and network activity.
Validation and detection
- Confirm whether any DNS-320 device runs firmware through 2.05.B10.
- Verify external attack surface scans do not expose the device interface.
- Review firewall rules for inbound access to NAS administration services.
- Check logs for unusual authentication, CGI, process, or outbound activity.
- Document compensating controls if immediate replacement is not possible.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-16057 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdfCVE reference · x_refsource_MISC
- https://blog.cystack.net/d-link-dns-320-rce/CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16057CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.