CVE-2025-66409 ESF-IDF has an Out-of-Bounds Read in ESP32 Bluetooth AVRCP Command Handling
Attackers can trigger out-of-bounds reads in ESP32 Bluetooth AVRCP handling, potentially exposing memory or causing crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66409?
CVE-2025-66409 is a low-severity vulnerability in espressif esp-idf, published on 2 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-125
Which versions are affected by CVE-2025-66409?
It affects 1 product.
Products include Espressif Esp-Idf.
How do I fix CVE-2025-66409?
No fix has been published for CVE-2025-66409 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66409 being exploited?
There is no known exploitation of CVE-2025-66409 in the wild and no public exploit code.
Other vulnerabilities in espressif esp-idf
Sources
Also known as GHSA-qhf9-vr2h-jh96.