How severe is CVE-2024-30166?

CVE-2024-30166 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2024-30166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-30166?

CVE-2024-30166 affects Trustedfirmware Mbed Tls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-30166?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-30166 have an EU (EUVD) identifier?

Yes. CVE-2024-30166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-28102.

When was CVE-2024-30166 published?

CVE-2024-30166 was published on 2024-04-03 and last updated on 2026-06-17.

CVE-2024-30166

CVE-2024-30166 is a critical-severity vulnerability in Trustedfirmware Mbed Tls with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-28102
Weakness: CWE-121
Affected product: Trustedfirmware Mbed Tls
Published: 2024-04-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2024-30166?: 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.
How severe is CVE-2024-30166?: CVE-2024-30166 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2024-30166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-30166?: CVE-2024-30166 affects Trustedfirmware Mbed Tls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-30166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-30166 have an EU (EUVD) identifier?: Yes. CVE-2024-30166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-28102.
When was CVE-2024-30166 published?: CVE-2024-30166 was published on 2024-04-03 and last updated on 2026-06-17.

References

Affected products (1)

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

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