Which versions of Dir 823x Firmware are affected by CVE-2025-14208?

Organizations using D-Link DIR-823X should be aware of moderate risk from CVE-2025-14208, a injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2025-14208?

Yes, a public proof-of-concept exploit is available for CVE-2025-14208. Prioritise patching immediately. EPSS: 0.9%.

How to fix or mitigate CVE-2025-14208?

Within 30 days: Identify affected systems running D-Link DIR-823X and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Dir 823x Firmware CVE-2025-14208

Q: What is the CVSS score of CVE-2025-14208?

CVE-2025-14208 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.9%.

EUVD-2025-201619 LOW

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2025-12-08 cna@vuldb.com

Command Injection D-Link Dir 823x Firmware

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

EUVD ID Assigned

Mar 15, 2026 - 17:54 euvd

EUVD-2025-201619

Analysis Generated

Mar 15, 2026 - 17:54 vuln.today

PoC Detected

Mar 09, 2026 - 15:12 vuln.today

Public exploit code

CVE Published

Dec 08, 2025 - 01:16 cve.org

LOW 2.1

CVE Published

Dec 08, 2025 - 01:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A security flaw has been discovered in D-Link DIR-823X up to 20250416. This affects the function sub_415028 of the file /goform/set_wan_settings. The manipulation of the argument ppp_username results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited.

AnalysisAI

Command injection in D-Link DIR-823X firmware allows remote authenticated attackers to execute arbitrary OS commands via the ppp_username parameter in the set_wan_settings endpoint. A proof-of-concept exploit is publicly available, but no active exploitation is confirmed. The vulnerability impacts firmware versions up to 202504