CVE-2024-23744

HIGHNVD 7.57.5—

7.5

An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 15.7%
KEV: Not listed

Published

January 21, 2024

Last Modified

June 5, 2026

References (2)

cve@mitrehttps://github.com/Mbed-TLS/mbedtls/issues/8694
af854a3a-2127-422b-91ae-364da2661108https://github.com/Mbed-TLS/mbedtls/issues/8694

Weakness Classification(1)

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

CWE-400Uncontrolled Resource Consumption (Denial of Service)

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2024-237442024-11-28
An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.

Data Freshness Timeline

(refreshed 16× 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.

2026-06-05 22:46 UTCepss_batch
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Frequently asked(5)

What is CVE-2024-23744?

CVE-2024-23744 is a high vulnerability published on January 21, 2024. An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.

When was CVE-2024-23744 disclosed?

CVE-2024-23744 was first published in the National Vulnerability Database on January 21, 2024, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-23744 actively exploited?

CVE-2024-23744 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-23744?

CVE-2024-23744 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2024-23744?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-23744, 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-2024-23744

Published

Last Modified

References (2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-23744?

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Same CWE

CVE-2024-23744

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-23744?

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Frequently asked(5)

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