CVE-2025-66409
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductEspressif Esp-idf
PublishedDec 2, 2025
First seenDec 2, 2025
Weakness typeCWE-125Out-of-bounds read
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| espressif esp-idf | v ≤ 5.1.6, 5.2 ≤ v ≤ 5.2.6, 5.3 ≤ v ≤ 5.3.4, 5.4 ≤ v ≤ 5.4.3, 5.5 ≤ v ≤ 5.5.1 | — |
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