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Vulnerability · Published Nov 17, 2025 · Assigned by GitHub_M

CVE-2025-64342ESF-IDF's ESP32 Bluetooth Controller Has an Invalid Access Address Vulnerability

Medium 6.9

In plain English

A medium-severity security flaw in esp-idf from espressif. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.4%top 62.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
espressif esp-idf >= 5.5-beta1, < 5.5.2>= 5.4-beta1, < 5.4.3>= 5.3-beta1, < 5.3.5>= 5.2-beta1, < 5.2.6< 5.1.7

Weakness: CWE-754 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References