TI-2021-08730 Aliases CVE-2021-27183 GHSA-vj3m-vm3j-x4j5

An issue was discovered in MDaemon before 20.0.4.

LOW 37CWE-610Published 2021-04-14 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in MDaemon before 20.0.4. Administrators can use Remote Administration to exploit an Arbitrary File Write vulnerability. An attacker is able to create new files in any location of the filesystem, or he may be able to modify existing files. This vulnerability may directly lead to Remote Code Execution.

Why it matters now

EPSS 0.02695 85th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:altn:mdaemon::::::::	before 20.0.4	Vulnerable	Altn

cpe:2.3:a:altn:mdaemon:*:*:*:*:*:*:*:* Versions before 20.0.4 Vulnerable ·Altn

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-27183
2026-10-03 Alias added: GHSA-vj3m-vm3j-x4j5

References

Exploit 1

https://github.com/chudyPB/MDaemon-Advisories

Advisory 1

https://www.altn.com/Support/SecurityUpdate/MD011221_MDaemon_EN/

TI-2008-01307 Stack-based buffer overflow in the IMAP server in Alt-N Technologies MDaemon 9.6.4 allows… CVSS 2.0MEDIUM 6.5
TI-2008-02521 The WordClient interface in Alt-N Technologies MDaemon 9.6.5 allows remote attackers to… CVSS 2.0MEDIUM 5.0
TI-2021-08729 An issue was discovered in MDaemon before 20.0.4. CVSS 3.1HIGH 8.8
TI-2021-08728 An issue was discovered in MDaemon before 20.0.4. CVSS 3.1HIGH 8.8
TI-2021-08727 An issue was discovered in MDaemon before 20.0.4. CVSS 3.1MEDIUM 6.1
TI-2019-06475 MDaemon Webmail 14.x through 18.x before 18.5.2 has XSS (issue 2 of 2). CVSS 3.0MEDIUM 6.1

See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences