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CVE-2026-25507
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Date: February 4, 2026
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a use-after-free vulnerability was reported in the BLE provisioning transport (protocomm_ble) layer. The issue can be triggered by a remote BLE client while the device is in provisioning mode. The vulnerability occurred when provisioning was stopped with keep_ble_on = true. In this configuration, internal protocomm_ble state and GATT metadata were freed while the BLE stack and GATT services remained active. Subsequent BLE read or write callbacks dereferenced freed memory, allowing a connected or newly connected client to trigger invalid memory acces. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
Severity Score
Related Resources (10)
Severity Score
Weakness Type (CWE)
Use After Free
CWE-416Top Fix
Upgrade Version
Upgrade to version https://github.com/espressif/esp-idf.git - v5.5.2;https://github.com/espressif/esp-idf.git - v5.1.7;https://github.com/espressif/esp-idf.git - v5.2.7;https://github.com/espressif/esp-idf.git - v5.3.5;https://github.com/espressif/esp-idf.git - v5.4.4
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | ADJACENT_NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | REQUIRED |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | LOW |
| Availability (A): | HIGH |