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Vulnerability · Published Dec 2, 2025 · Assigned by GitHub_M

CVE-2025-66409ESF-IDF has an Out-of-Bounds Read in ESP32 Bluetooth AVRCP Command Handling

Low 2.7

In plain English

A low-severity out-of-bounds read 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 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 4.0)2.7Low
Exploit odds (30 days)0.7%top 47.5% 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. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, when AVRCP is enabled on ESP32, receiving a malformed VENDOR DEPENDENT command from a peer device can cause the Bluetooth stack to access memory before validating the command buffer length. This may lead to an out-of-bounds read, potentially exposing unintended memory content or causing unexpected behavior.

Affected products (as reported)

VendorProductVersions
espressif esp-idf >= 5.5-beta1, <= 5.5.1>= 5.4-beta1, <= 5.4.3>= 5.3-beta1, <= 5.3.4>= 5.2-beta1, <= 5.2.6<= 5.1.6

Weakness: CWE-125 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U

References