How severe is CVE-2025-64342?

CVE-2025-64342 has a CVSS 4.0 base score of 6.9, rated medium severity.

Is CVE-2025-64342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-64342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-64342 have an EU (EUVD) identifier?

Yes. CVE-2025-64342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197854.

When was CVE-2025-64342 published?

CVE-2025-64342 was published on 2025-11-17 and last updated on 2026-06-17.

CVE-2025-64342

CVE-2025-64342 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.9. 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-754.

Key facts

Severity: Medium (CVSS 4.0 base score 6.9)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-197854
Weakness: CWE-754
Published: 2025-11-17
Last modified: 2026-06-17

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. When the ESP32 is in advertising mode, if it receives a connection request containing an invalid Access Address (AA) of 0x00000000 or 0xFFFFFFFF, advertising may stop unexpectedly. In this case, the controller may incorrectly report a connection event to the host, which can cause the application layer to assume that the device has successfully established a connection. This issue has been fixed in versions 5.5.2, 5.4.3, 5.3.5, 5.2.6, and 5.1.7. At time of publication versions 5.5.2, 5.3.5, and 5.1.7 have not been released but are fixed respectively in commits 3b95b50, e3d7042, and 75967b5.

Frequently asked questions

What is CVE-2025-64342?: ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. When the ESP32 is in advertising mode, if it receives a connection request containing an invalid Access Address (AA) of 0x00000000 or 0xFFFFFFFF, advertising may stop unexpectedly. In this case, the controller may incorrectly report a connection event to the host, which can cause the application layer to assume that the device has successfully established a connection. This issue has been fixed in versions 5.5.2, 5.4.3, 5.3.5, 5.2.6, and 5.1.7. At time of publication versions 5.5.2, 5.3.5, and 5.1.7 have not been released but are fixed respectively in commits 3b95b50, e3d7042, and 75967b5.
How severe is CVE-2025-64342?: CVE-2025-64342 has a CVSS 4.0 base score of 6.9, rated medium severity.
Is CVE-2025-64342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-64342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-64342 have an EU (EUVD) identifier?: Yes. CVE-2025-64342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197854.
When was CVE-2025-64342 published?: CVE-2025-64342 was published on 2025-11-17 and last updated on 2026-06-17.

References

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