Is CVE-2018-20305 actively exploited?

No active exploitation of CVE-2018-20305 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-20305 be exploited remotely?

Yes. CVE-2018-20305 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-20305?

CVE-2018-20305 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-20305

CRITICAL

CVE-2018-20305

CWE-787Published: December 20, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

D-Link DIR-816 A2 1.10 B05 devices allow arbitrary remote code execution without authentication via the newpass parameter. In the /goform/form2userconfig.cgi handler function, a long password may lead to a stack-based buffer overflow and overwrite a return address.

NVD Source

Technical Analysis

CVE-2018-20305 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.