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TI-2021-18343 Aliases CVE-2021-41636GHSA-qqcw-3w9h-vjff

MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the…

Priority LOW 32CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
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-22 and the CVSS impact.

Summary

MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the FTP servers root directory and operate on the entire operating system, while the access restrictions of the user running the FTP server apply.

Why it matters now

EPSS 0.01456 73rd 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-2021-41636
  2. 2026-10-03 Alias added: GHSA-qqcw-3w9h-vjff

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-2021-18345 The authentication checks of the MELAG FTP Server in version 2.2.0.4 are incomplete… CVSS 3.1HIGH 7.5
  • 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