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TI-2021-18345 Aliases CVE-2021-41638GHSA-m56w-5xpw-w7wc

The authentication checks of the MELAG FTP Server in version 2.2.0.4 are incomplete…

Priority LOW 36CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

The authentication checks of the MELAG FTP Server in version 2.2.0.4 are incomplete, which allows a remote attacker to access local files only by using a valid username.

Why it matters now

EPSS 0.01746 77th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:melag:ftp_server:2.2.0.4:*:*:*:*:*:*:*2.2.0.4VulnerableMelag
  • cpe:2.3:a:melag:ftp_server:2.2.0.4:*:*:*:*:*:*:* Versions 2.2.0.4 Vulnerable ·Melag

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41638
  2. 2026-10-03 Alias added: GHSA-m56w-5xpw-w7wc

References

Exploit 1

  • TI-2021-18342 When installed as Windows service MELAG FTP Server 2.2.0.4 is run as SYSTEM user, which… CVSS 3.1HIGH 8.8
  • TI-2021-18343 MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the… CVSS 3.1MEDIUM 6.5
  • TI-2021-18344 Weak access control permissions in MELAG FTP Server 2.2.0.4 allow the "Everyone" group to… CVSS 3.1HIGH 7.1
  • TI-2021-18341 A user enumeration vulnerability in MELAG FTP Server 2.2.0.4 allows an attacker to identify valid FTP usernames. CVSS 3.1MEDIUM 5.3
  • TI-2021-18346 MELAG FTP Server 2.2.0.4 stores unencrpyted passwords of FTP users in a local configuration file. CVSS 3.1MEDIUM 5.5

Sources

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