How severe is CVE-2024-53406?

CVE-2024-53406 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-53406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-53406?

CVE-2024-53406 affects Espressif Esp-idf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-53406?

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

Does CVE-2024-53406 have an EU (EUVD) identifier?

Yes. CVE-2024-53406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54052.

When was CVE-2024-53406 published?

CVE-2024-53406 was published on 2025-03-13 and last updated on 2026-06-17.

CVE-2024-53406

CVE-2024-53406 is a high-severity vulnerability in Espressif Esp-idf with a CVSS 3.x base score of 8.8. 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-54052
Weakness: CWE-639
Affected product: Espressif Esp-idf
Published: 2025-03-13
Last modified: 2026-06-17

Description

Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. In the reconnection phase, the device reuses the session key from a previous connection session, creating an opportunity for attackers to execute security bypass attacks.

Frequently asked questions

What is CVE-2024-53406?: Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. In the reconnection phase, the device reuses the session key from a previous connection session, creating an opportunity for attackers to execute security bypass attacks.
How severe is CVE-2024-53406?: CVE-2024-53406 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-53406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-53406?: CVE-2024-53406 affects Espressif Esp-idf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-53406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-53406 have an EU (EUVD) identifier?: Yes. CVE-2024-53406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54052.
When was CVE-2024-53406 published?: CVE-2024-53406 was published on 2025-03-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:espressif:esp-idf:5.3:-:*:*:*:*:*:*

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