6.3
/ 10
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
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, an out-of-bounds read vulnerability was reported in the BLE ATT Prepare Write handling of the BLE provisioning transport (protocomm_ble). The issue can be triggered by a remote BLE client while the device is in provisioning mode. The transport accumulated prepared-write fragments in a fixed-size buffer but incorrectly tracked the cumulative length. By sending repeated prepare write requests with overlapping offsets, a remote client could cause the reported length to exceed the allocated buffer size. This inflated length was then passed to provisioning handlers during execute-write processing, resulting in an out-of-bounds read and potential memory corruption. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
Basic Information
ID
CVE-2026-25508
Source
GitHub_M
Published
Feb 4, 2026 at 17:58
Affected Product
Vendor
espressif
Product
esp-idf
Version
= 5.5.2
Affected Versions
espressif esp-idf = 5.5.2
espressif esp-idf = 5.4.3
espressif esp-idf = 5.3.4
espressif esp-idf = 5.2.6
espressif esp-idf = 5.1.6
espressif esp-idf = 5.4.3
espressif esp-idf = 5.3.4
espressif esp-idf = 5.2.6
espressif esp-idf = 5.1.6
CWE Classification
References
- github.com /espressif/esp-idf/security/advisories/GHSA-9j5x-rf36-54x9
- github.com /espressif/esp-idf/commit/0540c85140c2c06c0cbecc8843277ea676d5c4a9
- github.com /espressif/esp-idf/commit/1ff264abf2504cade46f0ce3a03f821310bcf6d7
- github.com /espressif/esp-idf/commit/47552ff4fd824caf38215468ebd2f31fb5f36d70
- github.com /espressif/esp-idf/commit/4c3fdcd316f780bab4ae5aa73c9626ea9fe24ac6
- github.com /espressif/esp-idf/commit/894c28afe3f2f8f31ff25b64191883517dddb5cf
- github.com /espressif/esp-idf/commit/cde7b7362adc15638c141c249681cbe5d23de663
- github.com /espressif/esp-idf/commit/dba9a7dc01e4dab14c77d328f6a6f46369aeee63