Is CVE-2021-45786 actively exploited?

No active exploitation of CVE-2021-45786 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45786 be exploited remotely?

Yes. CVE-2021-45786 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45786?

CVE-2021-45786 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-45786

CRITICAL

CVE-2021-45786

CWE-287Published: March 16, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In maccms v10, an attacker can log in through /index.php/user/login in the "col" and "openid" parameters to gain privileges.

NVD Source

Technical Analysis

CVE-2021-45786 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-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.