What is the CVSS score of CVE-2025-45931?

CVE-2025-45931 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.5%.

Which versions of Dir 816 Firmware are affected by CVE-2025-45931?

CVE-2025-45931 presents critical security risk, a command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-45931?

Yes, a public proof-of-concept exploit is available for CVE-2025-45931. Prioritise patching immediately. EPSS: 1.5%.

How to fix or mitigate CVE-2025-45931?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

Dir 816 Firmware CVE-2025-45931

EUVD-2025-19574 CRITICAL

Command Injection (CWE-77)

2025-06-30 cve@mitre.org

RCE Command Injection D-Link Dir 816 Firmware

9.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 16, 2026 - 01:25 euvd

EUVD-2025-19574

Analysis Generated

Mar 16, 2026 - 01:25 vuln.today

PoC Detected

Jul 08, 2025 - 14:13 vuln.today

Public exploit code

CVE Published

Jun 30, 2025 - 17:15 nvd

CRITICAL 9.8

DescriptionNVD

An issue D-Link DIR-816-A2 DIR-816A2_FWv1.10CNB05_R1B011D88210 allows a remote attacker to execute arbitrary code via system() function in the bin/goahead file

Analysis

An issue D-Link DIR-816-A2 DIR-816A2_FWv1.10CNB05_R1B011D88210 allows a remote attacker to execute arbitrary code via system() function in the bin/goahead file

Technical ContextAI

Command injection allows an attacker to execute arbitrary OS commands on the host system through a vulnerable application that passes user input to system shells.

RemediationAI

Avoid passing user input to system commands. Use language-specific APIs instead of shell commands. If unavoidable, use strict input validation and escaping.