CVE-2025-68473
CVE-2025-68473 is a high-severity vulnerability in Espressif Esp-idf with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 8.6)
- CVSS v4: 0.0
- EPSS exploit prediction: 0% (30th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-205465
- Weakness: CWE-787
- Affected product: Espressif Esp-idf
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-68473?
- CVE-2025-68473 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
- Is CVE-2025-68473 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-68473?
- CVE-2025-68473 primarily affects Espressif Esp-idf. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-68473?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-68473 have an EU (EUVD) identifier?
- Yes. CVE-2025-68473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205465.
- When was CVE-2025-68473 published?
- CVE-2025-68473 was published on 2025-12-27 and last updated on 2026-06-17.
References
- 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
- https://github.com/espressif/esp-idf/security/advisories/GHSA-hmjj-rjvv-w8pq
Affected products (5)
- cpe:2.3:a:espressif:esp-idf:5.1.6:*:*:*:*:*:*:*
- cpe:2.3:a:espressif:esp-idf:5.2.6:*:*:*:*:*:*:*
- cpe:2.3:a:espressif:esp-idf:5.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:espressif:esp-idf:5.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:espressif:esp-idf:5.5.1:*:*:*:*:*:*:*
More vulnerabilities in Espressif Esp-idf
- CVE-2025-52471 — Critical (CVSS 9.8): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. An integer underflow vulnerability has been…
- CVE-2026-45328 — Critical (CVSS 9.3): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, the esp_tee…
- CVE-2025-66409 — Critical (CVSS 9.1): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and…
- CVE-2025-55297 — High (CVSS 8.8): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was…
- CVE-2024-53406 — High (CVSS 8.8): Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. In the reconnection…
- CVE-2021-28139 — High (CVSS 8.8): The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page…
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