CVE-2024-30166 - Vulnerability Details - OpenCVE

In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00348.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*

No data.

No data.

Project Subscriptions

Vendors	Products
Arm Subscribe	Mbed Tls Subscribe
Trustedfirmware Subscribe	Mbed Tls Subscribe

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0
https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

History

Fri, 05 Jun 2026 19:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Trustedfirmware Trustedfirmware mbed Tls
CPEs		cpe:2.3:a:trustedfirmware:mbed_tls::::::::
Vendors & Products		Trustedfirmware Trustedfirmware mbed Tls

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-04-03T00:00:00.000Z

Updated: 2024-08-02T01:25:03.067Z

Reserved: 2024-03-24T00:00:00.000Z

Link: CVE-2024-30166

Vulnrichment

Updated: 2024-08-01T14:13:30.410Z

NVD

Status : Analyzed

Published: 2024-04-03T03:15:10.510

Modified: 2026-06-05T19:38:32.047

Link: CVE-2024-30166

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-121

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2024-30166", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-08-02T01:25:03.067Z", "dateReserved": "2024-03-24T00:00:00.000Z", "datePublished": "2024-04-03T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-04-03T02:22:27.285Z"}, "descriptions": [{"lang": "en", "value": "In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"}, {"url": "https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "CWE-121 Stack-based Buffer Overflow"}]}], "affected": [{"vendor": "arm", "product": "mbed_tls", "cpes": ["cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "3.3.0", "status": "affected", "lessThan": "3.6.0", "versionType": "custom"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-08-01T14:09:37.825391Z", "id": "CVE-2024-30166", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-08-01T14:13:35.202Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T01:25:03.067Z"}, "title": "CVE Program Container", "references": [{"url": "https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/", "tags": ["x_transferred"]}, {"url": "https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-30166", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-08-01T14:09:37.825391Z"}}}], "affected": [{"cpes": ["cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*"], "vendor": "arm", "product": "mbed_tls", "versions": [{"status": "affected", "version": "3.3.0", "lessThan": "3.6.0", "versionType": "custom"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-08-01T14:13:30.410Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"}, {"url": "https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}], "descriptions": [{"lang": "en", "value": "In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-04-03T02:22:27.285722"}}}, "cveMetadata": {"cveId": "CVE-2024-30166", "state": "PUBLISHED", "dateUpdated": "2024-08-01T14:13:35.202Z", "dateReserved": "2024-03-24T00:00:00", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2024-04-03T00:00:00", "assignerShortName": "mitre"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*", "matchCriteriaId": "8BF2A7FE-B09C-4B6D-A6F8-DE2F17DE89F7", "versionEndExcluding": "3.6.0", "versionStartIncluding": "3.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Mbed TLS 3.3.0 through 3.5.2 before 3.6.0, a malicious client can cause information disclosure or a denial of service because of a stack buffer over-read (of less than 256 bytes) in a TLS 1.3 server via a TLS 3.1 ClientHello."}, {"lang": "es", "value": "En Mbed TLS 3.3.0 hasta 3.5.2 anterior a 3.6.0, un cliente malintencionado puede provocar la divulgaci\u00f3n de informaci\u00f3n o una denegaci\u00f3n de servicio debido a una sobrelectura del b\u00fafer de pila (de menos de 256 bytes) en un servidor TLS 1.3 a trav\u00e9s de un TLS. 3.1 ClientHello."}], "id": "CVE-2024-30166", "lastModified": "2026-06-05T19:38:32.047", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-04-03T03:15:10.510", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}