Is CVE-2023-36089 actively exploited?

No active exploitation of CVE-2023-36089 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-36089 be exploited remotely?

Yes. CVE-2023-36089 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-36089?

CVE-2023-36089 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-36089

CRITICAL

CVE-2023-36089

CWE-863Published: July 31, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Authentication Bypass vulnerability in D-Link DIR-645 firmware version 1.03 allows remote attackers to gain escalated privileges via function phpcgi_main in cgibin. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

NVD Source

Risk Analysis

D-Link DIR-645 firmware is vulnerable to an authentication bypass that allows remote attackers to gain escalated privileges. This critical vulnerability is unpatched because the device is no longer supported by the manufacturer.

No public exploit is known, and the vulnerability is not in CISA KEV. It is remotely exploitable with low attack complexity.

Recommended Action

Decommission the affected D-Link device and replace it with a currently supported model.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-36089 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.