ESP-IDF 5.5.15.1.6: OOB Write in BlueDroid SDP (uuid_list[32])
CVE-2025-68473 Published on December 26, 2025
ESF-IDF Has Out-of-Bounds Read in ESP32 Bluetooth SDP Result Handling
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, in the ESP-IDF Bluetooth host stack (BlueDroid), the function bta_dm_sdp_result() used a fixed-size array uuid_list[32][MAX_UUID_SIZE] to store discovered service UUIDs during the SDP (Service Discovery Protocol) process. On modern Bluetooth devices, it is possible for the number of available services to exceed this fixed limit (32). In such cases, if more than 32 services are discovered, subsequent writes to uuid_list could exceed the bounds of the array, resulting in a potential out-of-bounds write condition.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-68473 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-68473
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Affected Versions
espressif esp-idf:- Version >= 5.5-beta1, <= 5.5.1 is affected.
- Version >= 5.4-beta1, <= 5.4.3 is affected.
- Version >= 5.3-beta1, <= 5.3.4 is affected.
- Version >= 5.2-beta1, <= 5.2.6 is affected.
- Version <= 5.1.6 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.