← Vulnerability feed

Vulnerability record · CVE-2026-25507 · published 4 February 2026

CVE-2026-25507: Espressif esp-idf use after free vulnerability

EEspressif · Esp Idf

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.

6.3 CVSS 3.1 Medium EPSS 0.37% · top 71.3% CWE-416 · Use after free
6.3CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/espressif/esp-idf/commit/0540c85140c2c06c0cbecc8843277ea676d5c4a9 Patch
https://github.com/espressif/esp-idf/commit/1ff264abf2504cade46f0ce3a03f821310bcf6d7 Patch
https://github.com/espressif/esp-idf/commit/47552ff4fd824caf38215468ebd2f31fb5f36d70 Patch
https://github.com/espressif/esp-idf/commit/4c3fdcd316f780bab4ae5aa73c9626ea9fe24ac6 Patch
https://github.com/espressif/esp-idf/commit/894c28afe3f2f8f31ff25b64191883517dddb5cf Patch
https://github.com/espressif/esp-idf/commit/cde7b7362adc15638c141c249681cbe5d23de663 Patch
https://github.com/espressif/esp-idf/commit/dba9a7dc01e4dab14c77d328f6a6f46369aeee63 Patch
https://github.com/espressif/esp-idf/security/advisories/GHSA-h7r3-gmg9-xjmg Third Party Advisory

Track CVE-2026-25507 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-45328Espressif esp-idf improper input validation vulnerabilityESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, the esp_tee component exposes secure-service wrap…EPSS 0.18%8.8CVE-2024-53406Espressif esp-idf insecure direct object reference vulnerabilityEspressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. In the reconnection phase, the device reuses the s…EPSS 0.64%8.8CVE-2022-24893Espressif esp-idf out-of-bounds write vulnerabilityESP-IDF is the official development framework for Espressif SoCs. In Espressif’s Bluetooth Mesh SDK (`ESP-BLE-MESH`), a memory corruption vulnerabili…EPSS 0.52%8.8CVE-2021-28139Espressif esp-idf vulnerabilityThe Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page upon reception of an LMP Featur…EPSS 1.4%8.1CVE-2024-33453Espressif esp-idf classic buffer overflow vulnerabilityBuffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to obtain sensitive information via the externalId component.EPSS 0.97%8.1CVE-2019-12587Espressif esp-idf broken cryptographic algorithm vulnerabilityThe EAP peer implementation in Espressif ESP-IDF 2.0.0 through 4.0.0 and ESP8266_NONOS_SDK 2.2.0 through 3.1.0 allows the installation of a zero Pair…EPSS 0.88%8.0CVE-2026-25532Espressif esp-idf vulnerabilityESF-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 vulnerability exists in…EPSS 0.41%7.5CVE-2026-45541Espressif esp-idf null pointer dereference vulnerabilityESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a NULL-pointer dereference …EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2026-25507), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.