CVE-2024-40457

CRITICALNVD 9.19.1—

9.1

No-IP Dynamic Update Client (DUC) v3.x uses cleartext credentials that may occur on a command line or in a file. NOTE: the vendor's position is that cleartext in /etc/default/noip-duc is recommended and is the intentional behavior.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 86.7%
KEV: Not listed

Published

September 12, 2024

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated May 22, 2026

No patch confirmed yet.

generic

Running the Linux DUC v3.0 at startup | Support | No-IP Knowledge Base

https://www.noip.com/support/knowledgebase/running-linux-duc-v3-0-startup-2

generic

How to Install the Linux Dynamic Update Client (DUC) | No-IP

https://www.noip.com/support/knowledgebase/install-linux-3-x-dynamic-update-client-duc

generic

GitHub - jeppojeps/CVE-2024-40457-PoC: CVE PoC 2024-40457 · GitHub

https://github.com/jeppojeps/CVE-2024-40457-PoC

Weakness Classification(1)

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

CWE-312Cleartext Storage of Sensitive Information

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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Frequently asked(5)

What is CVE-2024-40457?

CVE-2024-40457 is a critical vulnerability published on September 12, 2024. No-IP Dynamic Update Client (DUC) v3.x uses cleartext credentials that may occur on a command line or in a file. NOTE: the vendor's position is that cleartext in /etc/default/noip-duc is recommended and is the intentional behavior.

When was CVE-2024-40457 disclosed?

CVE-2024-40457 was first published in the National Vulnerability Database on September 12, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-40457 actively exploited?

CVE-2024-40457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-40457?

CVE-2024-40457 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2024-40457?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-40457, 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-2024-40457

📅 Published

🔄 Last Modified

📋 Advisory Details (3)

Running the Linux DUC v3.0 at startup | Support | No-IP Knowledge Base

How to Install the Linux Dynamic Update Client (DUC) | No-IP

GitHub - jeppojeps/CVE-2024-40457-PoC: CVE PoC 2024-40457 · GitHub

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-40457?

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Last Modified

Advisory Details (3)

Frequently asked(5)

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