CVE-2026-87961
ESP32-audioI2S 3.4.4 through 4.0.0 Heap-based Out-of-Bounds Read via Shadowed Length Parameter in read_ID3_Header
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Reserved
- Sep 9, 2026
Description
ESP32-audioI2S versions 3.4.4 through 4.0.0 contain a heap-based out-of-bounds read vulnerability in the read_ID3_Header function due to a shadowed length parameter in ID3 synchronized-lyrics processing. Attackers can craft malicious MP3 files or HTTP audio streams with oversized frame size declarations to read past allocated buffer boundaries, causing device crashes or exposing adjacent heap memory.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
ESP32-audioI2Sschreibfaul1 |
|
References
- GitHub Issue #1380issue-tracking
- GitHub Pull Request #1381patchissue-tracking
- Merge commit 4dc4614patch
- Audio.cpp SYLT block at 4.0.0technical-description
- Audio.cpp legacy ID3v2.2 SLT block at 4.0.0technical-description
- Audio.cpp legacy ID3v2.2 SLT block at 3.4.4technical-description
- https://github.com/schreibfaul1/ESP32-audioI2Sproduct
- VulnCheck Advisory: ESP32-audioI2S 3.4.4 through 4.0.0 Heap-based Out-of-Bounds Read via Shadowed Length Parameter in read_ID3_Headerthird-party-advisory
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