---
cve: "CVE-2026-81508"
severity: "MEDIUM"
cvss: 4.3
epss: "2.3%"
vendor: "espressif"
kev: false
exploited: false
published: "2026-09-24 18:18:57"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-26T08:47:35+02:00"
---

# CVE-2026-81508

> 4.3 MEDIUM · 🧪 PoC

## Beschreibung

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.5, 6.0.1, and 6.1, the BlueDroid A2DP sink function btc_a2dp_sink_handle_inc_media() reads a timestamp field from the received media buffer before validating that the packet layout contains the field. A paired BR/EDR audio source within radio range can send a malformed A2DP media packet to a build with BlueDroid Classic Bluetooth and A2DP sink support enabled, causing an out-of-bounds read into adjacent heap memory and limited disclosure of heap contents. Arbitrary memory disclosure and code execution are not established.

## CVSS-Vektor

```
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 0d118139ff8b7aa87b656c2f4a6421ecaa1f5939 (Commit)
- 6cb20db4dfeee81314d0c55acb82f3f0e7679abe (Commit)

## Referenzen

- <https://github.com/espressif/esp-idf/security/advisories/GHSA-xcpr-5mqp-9qvv>
- <https://github.com/espressif/esp-idf/commit/0d118139ff8b7aa87b656c2f4a6421ecaa1f5939>
- <https://github.com/espressif/esp-idf/commit/6cb20db4dfeee81314d0c55acb82f3f0e7679abe>
- <https://github.com/espressif/esp-idf/commit/85d56bcd266117e0fe6a6b75511c8e122fda29ad>
- <https://github.com/espressif/esp-idf/commit/ca55d63de82e41e2c672bfd2b707fc80911f30ce>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-81508) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_