TI-2021-08729 Aliases CVE-2021-27182 GHSA-xqqm-w483-3fhq

An issue was discovered in MDaemon before 20.0.4.

MEDIUM 41CWE-74Published 2021-04-14 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: Low
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. There is an IFRAME injection vulnerability in Webmail (aka WorldClient). It can be exploited via an email message. It allows an attacker to perform any action with the privileges of the attacked user.

Why it matters now

EPSS 0.01554 75th 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-2021-27182
2026-10-03 Alias added: GHSA-xqqm-w483-3fhq

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-2021-08728 An issue was discovered in MDaemon before 20.0.4. CVSS 3.1HIGH 8.8
TI-2021-08730 An issue was discovered in MDaemon before 20.0.4. CVSS 3.1HIGH 7.2
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