ESF-IDF BluFi Example Memory Overflow Vulnerability
Priority LOW 26CWE-120Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was vulnerable to memory overflows in two areas: Wi-Fi credential handling and Diffie–Hellman key exchange. This vulnerability is fixed in 5.4.1, 5.3.3, 5.1.6, and 5.0.9.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00358 29th percentileScored 2026-11-07
Fix Fixed esp-idf (espressif): 5.0.9, 5.1.6, 5.3.3 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | before 5.0.9; 5.1-beta1 to before 5.1.6; 5.2-beta1 to before 5.3.3; 5.4-beta1 to before 5.4.1 | 5.0.9, 5.1.6, 5.3.3, 5.4.1 | Patch available | CNA |
- esp-idf Vendorespressif Affected before 5.0.9; 5.1-beta1 to before 5.1.6; 5.2-beta1 to before 5.3.3; 5.4-beta1 to before 5.4.1 Fixed in 5.0.9, 5.1.6, 5.3.3, 5.4.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* | before 5.0.9; 5.1 to before 5.1.6; 5.2 to before 5.3.3; 5.4 to before 5.4.1 | Vulnerable | espressif |
- cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* Versions before 5.0.9; 5.1 to before 5.1.6; 5.2 to before 5.3.3; 5.4 to before 5.4.1 Vulnerable ·espressif
Remediation
- Fix · CNA esp-idf (espressif) Fixed in 5.0.9, 5.1.6, 5.3.3, 5.4.1
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55297
References
Patch 12
- https://github.com/espressif/esp-idf/commit/12b7a9e6d78012ab9184b7ccdb5524364bf7e345
- https://github.com/espressif/esp-idf/commit/3fc6c93936077cb1659e1f0e0268e62cf6423e9d
- https://github.com/espressif/esp-idf/commit/5f93ec3b11b6115475c34de57093b3672d594e8f
- https://github.com/espressif/esp-idf/commit/9cb7206d4ae8fd8f4296cd57d6c78a1656f42efa
- https://github.com/espressif/esp-idf/commit/abc18e93eb3500dbec74c3e589671ef82c8b3919
- https://github.com/espressif/esp-idf/commit/b1657d9dd4d0e48ed25e02cb8fe8413f479a2a84
- https://github.com/espressif/esp-idf/commit/bf50c0c197af30990026c8f8286298d2aa5a3c99
- https://github.com/espressif/esp-idf/commit/cb6929a2e6f2ff130b742332dc15eb23006c7cc9
- https://github.com/espressif/esp-idf/commit/cc00e9f2fc4f7e8fbaff27851b4a8b45fa483501
- https://github.com/espressif/esp-idf/commit/e65cf7ea2a2be52219ec9d4efc44aed5e490e91c
- https://github.com/espressif/esp-idf/commit/f40aa9c587a8e570dfde2e6330382dcd170d5a5d
- https://github.com/espressif/esp-idf/commit/f77da0d5b5382635c99e6708551b73802ad1213d
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