Espressif ESP-IDF up to 5.5.1 unusual condition

Summaryinfo

A vulnerability has been found in Espressif ESP-IDF up to 5.1.6/5.2.5/5.3.4/5.4.2/5.5.1 and classified as problematic. Affected by this issue is some unknown functionality. Performing a manipulation results in unusual condition. This vulnerability is known as CVE-2025-64342. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Espressif ESP-IDF up to 5.1.6/5.2.5/5.3.4/5.4.2/5.5.1. This affects an unknown part. The manipulation with an unknown input leads to a unusual condition vulnerability. CWE is classifying the issue as CWE-754. The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-64342 since 10/30/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 5.1.7, 5.2.6, 5.3.5, 5.4.3 or 5.5.2 eliminates this vulnerability. Applying the patch 309f031dd6b04de30c926a256508c65b0df95dfa is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• Espressif

Name

• ESP-IDF

Version

• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.1.6
• 5.2.0
• 5.2.1
• 5.2.2
• 5.2.3
• 5.2.4
• 5.2.5
• 5.3.0
• 5.3.1
• 5.3.2
• 5.3.3
• 5.3.4
• 5.4.0
• 5.4.1
• 5.4.2
• 5.5.0
• 5.5.1

License

• open-source

Website

• Product: https://github.com/espressif/esp-idf/

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