CVE-2021-41636

MEDIUMNVD 6.56.5—

6.5

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.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 61.5%
KEV: Not listed

Published

June 24, 2022

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/
af854a3a-2127-422b-91ae-364da2661108https://www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-22Path Traversal

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-41636?

CVE-2021-41636 is a medium vulnerability published on June 24, 2022. 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.

When was CVE-2021-41636 disclosed?

CVE-2021-41636 was first published in the National Vulnerability Database on June 24, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-41636 actively exploited?

CVE-2021-41636 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-41636?

CVE-2021-41636 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2021-41636?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41636, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-41636

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-41636?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)