Cyber Resilience

CVE-2023-25279

RCE in Dlink Dir-820L Firmware 1.05b03

Public PoCRCECommand Injection
Published
13 March 2023
Modified
03 November 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.31 98th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2023-25279 is a critical-severity OS Command Injection (CWE-78) vulnerability in Dlink Dir-820L Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV 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.

CVE-2023-25279 is an OS command injection vulnerability, tracked under CWE-78, that affects the D-Link DIR820LA1_FW105B03 firmware. The flaw permits unauthenticated remote attackers to inject and execute arbitrary operating system commands, resulting in privilege escalation to root.

An attacker can exploit the issue over the network with no credentials or user interaction required, achieving full control of the affected device by supplying a crafted payload to the vulnerable component.

D-Link has published a security bulletin addressing the device, available via the vendor's security page, though specific patch or firmware remediation details are referenced only at the high level in public sources.

The EPSS score for this CVE rose from a low baseline to a peak of 0.7193 before receding to the current value of 0.4387, indicating that exploitation interest emerged after disclosure. Public proof-of-concept material has been posted to GitHub repositories targeting the tools_AccountName command injection path.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via a crafted payload.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2022-26258Same product: Dlink Dir-820L
CVE-2023-25280Same product: Dlink Dir-820L
CVE-2021-45382Same product: Dlink Dir-820L
CVE-2024-48150Same product: Dlink Dir-820L
CVE-2023-44807Same product: Dlink Dir-820L
CVE-2023-25282Same product: Dlink Dir-820L
CVE-2023-25283Same product: Dlink Dir-820L
CVE-2023-25281Same product: Dlink Dir-820L
CVE-2023-44808Same product: Dlink Dir-820L
CVE-2023-51625Same vendor: Dlink

Affected Assets

dlink
dir-820l firmware
1.05b03

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
  • V15.2.5

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
prevents

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
prevents

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References