Mdaemon
CVE-2021-27181
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could trick authenticated users into performing unintended actions by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
An issue was discovered in MDaemon before 20.0.4. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement anti-CSRF tokens, validate Origin/Referer headers, use SameSite cookie attribute.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Request Forgery (CSRF) (CWE-352), which allows attackers to trick authenticated users into performing unintended actions. 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. Affected products include: Altn Mdaemon. Version information: before 20.0.4..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Request Forgery exploits the automatic credential inclusion behavior of web browsers.
Affected Products (CPE)NVD
An issue was discovered in MDaemon before 20.0.4. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
An issue was discovered in MDaemon before 20.0.4. Rated high severity (CVSS 7.2), this vulnerability is remotely exploit
An issue was discovered in MDaemon before 20.0.4. Rated medium severity (CVSS 6.1), this vulnerability is remotely explo
MDaemon SecurityGateway through 9.0.3 allows XSS via a crafted Message Content Filtering rule. Rated medium severity (CV
Multiple cross-site scripting (XSS) vulnerabilities in Alt-N MDaemon Free 12.5.4 allow remote attackers to inject arbitr
MDaemon Webmail 14.x through 18.x before 18.5.2 has XSS (issue 2 of 2). Rated medium severity (CVSS 6.1), this vulnerabi
MDaemon Webmail 14.x through 18.x before 18.5.2 has XSS (issue 1 of 2). Rated medium severity (CVSS 6.1), this vulnerabi
An Authenticated Reflected Cross-site scripting at BCC Parameter was discovered in MDaemon before 22.0.0 . Rated medium
An Authenticated Reflected Cross-site scripting at CC Parameter was discovered in MDaemon before 22.0.0 . Rated medium s
An XSS issue was discovered in MDaemon Email Server version 25.0.1 and below. Rated medium severity (CVSS 5.3), this vul
An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. Rated medium severity (CVSS 5.3), this vulne
Exploit-DB