CVE-2026-87961: Out-of-bounds Read in schreibfaul1 ESP32-audioI2S
ESP32-audioI2S versions 3.4.4 through 4.0.0 have a heap-based out-of-bounds read vulnerability in the read_ID3_Header function. This flaw arises from a shadowed length parameter during ID3 synchronized-lyrics processing. Maliciously crafted MP3 files or HTTP audio streams with oversized frame size declarations can trigger reading beyond allocated buffer boundaries, potentially causing device crashes or exposure of adjacent heap memory.
AI Analysis
Technical Summary
The vulnerability in ESP32-audioI2S (versions 3.4.4 through 4.0.0) is a heap-based out-of-bounds read in the read_ID3_Header function. It is caused by a shadowed length parameter in the processing of ID3 synchronized-lyrics, allowing attackers to craft MP3 files or HTTP audio streams with oversized frame size declarations. This leads to reading past the allocated buffer boundaries, which can result in device crashes or leakage of adjacent heap memory.
Potential Impact
Successful exploitation can cause device crashes or disclosure of adjacent heap memory contents due to out-of-bounds reads. This may lead to denial of service or potential information exposure on affected devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented.
CVE-2026-87961: Out-of-bounds Read in schreibfaul1 ESP32-audioI2S
Description
ESP32-audioI2S versions 3.4.4 through 4.0.0 have a heap-based out-of-bounds read vulnerability in the read_ID3_Header function. This flaw arises from a shadowed length parameter during ID3 synchronized-lyrics processing. Maliciously crafted MP3 files or HTTP audio streams with oversized frame size declarations can trigger reading beyond allocated buffer boundaries, potentially causing device crashes or exposure of adjacent heap memory.
CVSS v4.0
Score 7.1high
Affected software
pkg:github/ESP32-audioI2SRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in ESP32-audioI2S (versions 3.4.4 through 4.0.0) is a heap-based out-of-bounds read in the read_ID3_Header function. It is caused by a shadowed length parameter in the processing of ID3 synchronized-lyrics, allowing attackers to craft MP3 files or HTTP audio streams with oversized frame size declarations. This leads to reading past the allocated buffer boundaries, which can result in device crashes or leakage of adjacent heap memory.
Potential Impact
Successful exploitation can cause device crashes or disclosure of adjacent heap memory contents due to out-of-bounds reads. This may lead to denial of service or potential information exposure on affected devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-09T17:35:17.883Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa28f7dacd9273b4903bb0a
Added to database: 09/10/2026, 11:07:41 UTC
Last enriched: 09/10/2026, 11:22:10 UTC
Last updated: 09/10/2026, 11:59:45 UTC
Views: 6
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