Is CVE-2021-27181 actively exploited?

No active exploitation of CVE-2021-27181 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-27181 be exploited remotely?

Yes. CVE-2021-27181 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-27181?

CVE-2021-27181 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-27181

HIGH

CVE-2021-27181

CWE-352Published: April 14, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

An issue was discovered in MDaemon before 20.0.4. Remote Administration allows an attacker to perform a fixation of the anti-CSRF token. In order to exploit this issue, the user has to click on a malicious URL provided by the attacker and successfully authenticate into the application. Having the value of the anti-CSRF token, the attacker may trick the user into visiting his malicious page and performing any request with the privileges of attacked user.

NVD Source

Technical Analysis

CVE-2021-27181 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 8.8.