EUVD-2026-72776
GHSA-7j8v-4c52-3rm4
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description confirms only DoS; C:H/I:H from the assigned score is unsubstantiated, so C:N/I:N assessed until RCE is confirmed; A:H for firmware crash.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
An issue in the l2cap_handle_data() function of Bestechnic Co., Ltd BES2300 Bluetooth Audio SoC firmware v3.x and earlier allows attackers to cause a Denial of Service (DoS) via sending a crafted L2CAP packet.
AnalysisAI
Unauthenticated adjacent-network exploitation of l2cap_handle_data() in Bestechnic BES2300 Bluetooth Audio SoC firmware v3.x and earlier allows an attacker within Bluetooth range to crash the device by sending a crafted L2CAP packet, causing a Denial of Service. The assigned CVSS vector reports C:H/I:H/A:H - substantially exceeding the described DoS-only impact - suggesting the underlying memory corruption may carry code execution potential not explicitly confirmed in the advisory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target device must be running BES2300 Bluetooth Audio SoC firmware version 3.x or earlier with Bluetooth active and in a connectable state. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base vector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H yields a score of 8.8, reflecting unauthenticated adjacent-network exploitation with low complexity and no user interaction - attributes that lower the practical bar for attack. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply firmware updates as directed in the Bestechnic vendor advisory at https://www.bestechnic.com/CVE-2026-79376.pdf, which should specify the exact patched firmware build superseding v3.x. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your inventory of wireless audio devices (earbuds, headsets, speakers, TWS devices) to identify which products use Bestechnic BES2300 SoC-consult device manuals, contact manufacturers, or use reverse-engineering tools if necessary. …
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today