CVE-2026-51266

ESP32-audioI2S Heap-Based Buffer Overflow Allowing Remote Code Execution

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Published Jul 28, 2026 CVSS n/a EPSS n/a KEV · Not listed
Description
DO NOT USE THIS CVE RECORD. ConsultIDs: none. Reason: This record was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References

No reference.

History
Type Values Removed Values Added
Title ESP32-audioI2S Heap-Based Buffer Overflow Allowing Remote Code Execution
Type Values Removed Values Added
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description schreibfaul1 ESP32-audioI2S 3.4.5 has a heap-based buffer overflow vulnerability in the HTTP request header construction logic. The application dynamically splices attacker-controlled host name, path, query string, and multiple HTTP header fields into a fixed ps_ptr heap buffer without proper size limitation and boundary validation. Remote attackers can use an oversized crafted network request parameter to trigger out-of-bounds heap write, leading to arbitrary code execution. DO NOT USE THIS CVE RECORD. ConsultIDs: none. Reason: This record was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.
References
Type Values Removed Values Added
First Time appeared Schreibfaul1
Schreibfaul1 esp32-audioi2s
Vendors & Products Schreibfaul1
Schreibfaul1 esp32-audioi2s
Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description schreibfaul1 ESP32-audioI2S 3.4.5 has a heap-based buffer overflow vulnerability in the HTTP request header construction logic. The application dynamically splices attacker-controlled host name, path, query string, and multiple HTTP header fields into a fixed ps_ptr heap buffer without proper size limitation and boundary validation. Remote attackers can use an oversized crafted network request parameter to trigger out-of-bounds heap write, leading to arbitrary code execution.
References
Earlier changes (1)
Weaknesses

No weakness.

Sources

Status
REJECTED
Assigner
mitre
Published
Updated
Jul 31, 2026, 2:34 PM
Reserved
Jun 7, 2026, 12:00 AM

View source JSON

Updated

JSON

Status
Rejected
Published
Jul 28, 2026, 4:18 PM
Modified
Jul 31, 2026, 3:16 PM

View source JSON

No data.

No data.