Espressif ESP-IDF 5.5.5/6.0.1/6.1 BlueDroid A2DP Sink btc_a2dp_sink_handle_inc_media out-of-bounds

Summaryinfo

A vulnerability classified as problematic was found in Espressif ESP-IDF 5.5.5/6.0.1/6.1. Affected by this issue is the function btc_a2dp_sink_handle_inc_media of the component BlueDroid A2DP Sink. Executing a manipulation can lead to out-of-bounds. This vulnerability is handled as CVE-2026-81508. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Espressif ESP-IDF 5.5.5/6.0.1/6.1. It has been declared as problematic. This vulnerability affects the function btc_a2dp_sink_handle_inc_media of the component BlueDroid A2DP Sink. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. CVE summarizes:

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.5, 6.0.1, and 6.1, the BlueDroid A2DP sink function btc_a2dp_sink_handle_inc_media() reads a timestamp field from the received media buffer before validating that the packet layout contains the field. A paired BR/EDR audio source within radio range can send a malformed A2DP media packet to a build with BlueDroid Classic Bluetooth and A2DP sink support enabled, causing an out-of-bounds read into adjacent heap memory and limited disclosure of heap contents. Arbitrary memory disclosure and code execution are not established.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-81508 since 08/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/24/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Espressif

Name

• ESP-IDF

Version

• 5.5.5
• 6.0.1
• 6.1

Website

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

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion