Description
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Prior to 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1, ESP-IDF BlueDroid L2CAP configuration-option processing in l2c_main.c and l2c_utils.c does not consistently validate option lengths against the remaining received packet bytes. A remote unauthenticated BR/EDR peer within radio range can send a malformed L2CAP configuration request that causes an out-of-bounds read, and under some runtime conditions limited adjacent Bluetooth stack memory can be included in an outbound L2CAP Configuration Response. The issue affects ESP32-class products using the BlueDroid host stack with Classic Bluetooth enabled. This issue is fixed in 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1.
References10
- github.com/espressif/esp-idf/commit/14c99559b4337cabcf0f09c21d1…
- github.com/espressif/esp-idf/commit/1e07f6d83ca892630a7210df295…
- github.com/espressif/esp-idf/commit/5731c63ece128f156939b9f7342…
- github.com/espressif/esp-idf/commit/8de265dc44b1b22c749ea44ee7c…
- github.com/espressif/esp-idf/commit/9a6d04f65e0e341e7d72bd417c9…
- github.com/espressif/esp-idf/commit/c2610255a5adce651ca582bb823…
- github.com/espressif/esp-idf/commit/c8cd8f4f3019ae2f912c8cbe997…
- github.com/espressif/esp-idf/releases/tag/v5.2.8
- github.com/espressif/esp-idf/releases/tag/v5.3.6
- github.com/espressif/esp-idf/releases/tag/v5.5.5
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 18 · as of 11 November 2026
- CWE
- CWE-125
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