Buffer overflow in Espressif Esp-Idf
CVE-2025-68473
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000
Affected products
- Espressif Esp-Idf — versions 5.3.4, >= 5.4-beta1, <= 5.4.3, 5.5.1
Weakness classification (CWE)
References
- github.com/espressif/esp-idf/security/advisories/GHSA-hmjj-rjvv-w8pq (Mitigation, Vendor Advisory)
- github.com/espressif/esp-idf/commit/3286e45349b0b5c2b1422ef7e8d088b95eef895d (Patch)
- github.com/espressif/esp-idf/commit/4d928f2265c394d2abc85024228e920a5b26bcab (Patch)
- github.com/espressif/esp-idf/commit/5b3185168dae83d42aa0852689422fffd931f16c (Patch)
- github.com/espressif/esp-idf/commit/6453f57a954458ad8ffd6e4bf2d9e76b73fac0f1 (Patch)
- github.com/espressif/esp-idf/commit/6ca6f422dafaffcb88fa56cc458ce92d96be3b2e (Patch)
- github.com/espressif/esp-idf/commit/9889edd799cf369e082df9d01adba961d64693ed (Patch)
- github.com/espressif/esp-idf/commit/ecb86d353640cf1375bf97db32e702ba59c551b6 (Patch)
Frequently asked questions
- What is CVE-2025-68473?
- CVE-2025-68473 is a high-severity vulnerability in Espressif Esp-Idf, classified under Out-of-bounds Write. CVSS score: 8.6/10. Published 2025-12-27.
- How severe is CVE-2025-68473?
- High severity. CVSS v3 base score is 8.6 out of 10.