CVE-2021-41637

Password disclosure via weak file permissions

Published Jun 24, 2022 · Updated Aug 4, 2024

Incorrect access control in MELAG FTP Server 2.2.0.4 allows local users to read the FTP configuration file and recover plaintext passwords. The configuration file is readable by the Everyone group because its filesystem permissions are too broad, exposing unencrypted credentials for every FTP account. A local account with filesystem access is required; the flaw discloses credentials that can enable subsequent FTP access, but does not itself alter files.

CVSS severity7.1
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in MELAG FTP Server 2.2.0.4 allows local users to read the FTP configuration file and recover plaintext passwords. The configuration file is readable by the Everyone group because its filesystem permissions are too broad, exposing unencrypted credentials for every FTP account. A local account with filesystem access is required; the flaw discloses credentials that can enable subsequent FTP access, but does not itself alter files.

The record

CVE
CVE-2021-41637
Published
Jun 24, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1552.001Credentials from Password Stores: Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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