ESF-IDF has an Out-of-Bounds Read in ESP32 Bluetooth AVRCP Command Handling
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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 earlier, when AVRCP is enabled on ESP32, receiving a malformed VENDOR DEPENDENT command from a peer device can cause the Bluetooth stack to access memory before validating the command buffer length. This may lead to an out-of-bounds read, potentially exposing unintended memory content or causing unexpected behavior.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| espressif | esp-idf | 5.5-beta1 – 5.5.1; 5.4-beta1 – 5.4.3; 5.3-beta1 – 5.3.4; 5.2-beta1 – 5.2.6; up to 5.1.6 | — | No fix listed | CNA |
- esp-idf Vendorespressif Affected 5.5-beta1 – 5.5.1; 5.4-beta1 – 5.4.3; 5.3-beta1 – 5.3.4; 5.2-beta1 – 5.2.6; up to 5.1.6 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* | up to 5.1.6; 5.2 – 5.2.6; 5.3 – 5.3.4; 5.4 – 5.4.3; 5.5 – 5.5.1 | Vulnerable | espressif |
- cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* Versions up to 5.1.6; 5.2 – 5.2.6; 5.3 – 5.3.4; 5.4 – 5.4.3; 5.5 – 5.5.1 Vulnerable ·espressif
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66409
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Patch 7
- https://github.com/espressif/esp-idf/security/advisories/GHSA-qhf9-vr2h-jh96
- https://github.com/espressif/esp-idf/commit/075ed218cadb8088155521cd8a795d8a626519fb
- https://github.com/espressif/esp-idf/commit/2f788e59ee361eee230879ae2ec9cf5c893fe372
- https://github.com/espressif/esp-idf/commit/798029129a71c802cff0e75eb59f902bca8f1946
- https://github.com/espressif/esp-idf/commit/999710fccf95ae128fe51b5679d6b7c75c50d902
- https://github.com/espressif/esp-idf/commit/d5db5f60fc1dcfdd8cd3ee898fdefaa272988ace
- https://github.com/espressif/esp-idf/commit/daeeba230327176b9627b1caa94acdc54065c4b7
More espressif Esp-idf vulnerabilities
- TI-2024-22076 Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
- TI-2026-33125 ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers CVSS 3.1CRITICAL 9.3
- TI-2025-32598 ESP-NOW Integer Underflow Vulnerability Advisory CVSS 4.0HIGH 7.2
- TI-2022-08703 Espressif Bluetooth Mesh Stack Vulnerable to Out-of-bounds Write leading to memory buffer corruption CVSS 3.1HIGH 8.8
- TI-2021-09371 The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not… CVSS 3.1HIGH 8.8
- TI-2026-33292 ESF-IDF: Remote Null Pointer Dereference in WebSocket Server CVSS 3.1HIGH 7.5
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences