CVE-2019-16057

RCE in Dlink Dns-320 Firmware ≤ 2.05.b10

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRansomware-linkedRCE Command Injection

Published

16 September 2019

Modified

06 November 2025

KEV Added

15 April 2022

CVSS Score v3.1 9.8

Click a component to see what it means

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.86 99.7th percentile

Risk Priority 97 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2019-16057 is a critical-severity OS Command Injection (CWE-78) vulnerability in Dlink Dns-320 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 0.3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability CVE-2019-16057 is an OS command injection flaw (CWE-78) in the login_mgr.cgi script of D-Link DNS-320 network-attached storage devices running firmware versions through 2.05.B10. It received a CVSS 3.1 base score of 9.8, driven by network attack vector, low complexity, and no requirements for authentication or user interaction.

Remote attackers can supply crafted input to the script to execute arbitrary operating-system commands on the device. This grants full read, write, and control capabilities, resulting in complete compromise of confidentiality, integrity, and availability.

The issue is listed in CISA's Known Exploited Vulnerabilities catalog, confirming observed real-world exploitation. Public references include detailed technical write-ups of the remote-code-execution path and an FTC enforcement action against D-Link that references the affected product line.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2019-6920

Vulnerability Data

The login_mgr.cgi script in D-Link DNS-320 through 2.05.B10 is vulnerable to remote command injection.

CWE(s): CWE-78
KEV Date Added: 15 April 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access

Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.

attack.mitre.org →

T1007 System Service Discovery Discovery

Adversaries may try to gather information about registered local system services.

attack.mitre.org →

T1010 Application Window Discovery Discovery

Adversaries may attempt to get a listing of open application windows.

attack.mitre.org →

T1021.004 SSH Lateral Movement

Adversaries may use [Valid Accounts](https://attack.

attack.mitre.org →

T1021.008 Direct Cloud VM Connections Lateral Movement

Adversaries may leverage [Valid Accounts](https://attack.

attack.mitre.org →

T1027.001 Binary Padding Stealth

Adversaries may use binary padding to add junk data and change the on-disk representation of malware.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2020-25506Same product: Dlink Dns-320both on KEV

CVE-2026-8271Same product: Dlink Dns-320

CVE-2026-8273Same product: Dlink Dns-320

CVE-2026-8272Same product: Dlink Dns-320

CVE-2022-26258Same vendor: Dlinkboth on KEV

CVE-2016-11021Same vendor: Dlinkboth on KEV

CVE-2021-45382Same vendor: Dlinkboth on KEV

CVE-2020-9377Same vendor: Dlinkboth on KEV

CVE-2019-16920Same vendor: Dlinkboth on KEV

CVE-2019-17621Same vendor: Dlinkboth on KEV

Affected Assets

dlink

dns-320 firmware

≤ 2.05.b10

Mitigating Controls

Control response

Prevent

Stop it (NIST 800-53)

—

Detect

Catch it (NIST detect / respond)

—

Harden

Shrink the surface (DISA STIG)

—

Validate

Prove the fix (OWASP ASVS)

V1.2.5
V1.2.8

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications

addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation

addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match

blocks

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match

blocks

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match

removes

A.5.15 Access control partial match

removes

A.5.16 Identity management partial match

removes

A.5.17 Authentication information partial match

removes

A.5.18 Access rights partial match

removes

A.8.10 Information deletion partial match

removes