What is the CVSS score of CVE-2023-51987?

CVE-2023-51987 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: 0.4%.

Which versions of Dir 822 Firmware are affected by CVE-2023-51987?

CVE-2023-51987 presents critical security risk, a missing authentication vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-51987?

Yes, a public proof-of-concept exploit is available for CVE-2023-51987. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2023-51987?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Audit authentication configurations and rotate any potentially compromised credentials.

Dir 822 Firmware CVE-2023-51987

CRITICAL

Missing Authentication for Critical Function (CWE-306)

2024-01-11 cve@mitre.org

Authentication Bypass D-Link Dir 822 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

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

Analysis Generated

Mar 28, 2026 - 19:34 vuln.today

PoC Detected

Jun 20, 2025 - 17:15 vuln.today

Public exploit code

CVE Published

Jan 11, 2024 - 16:15 nvd

CRITICAL 9.8

DescriptionCVE.org

D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords.

AnalysisAI

D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. D-Link DIR-822+ V1.0.2 contains a login bypass in the HNAP1 interface, which allows attackers to log in to administrator accounts with empty passwords. Affected products include: Dlink Dir-822 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.