CVE-2026-79376

Service interruption via crafted L2CAP packet

Published Sep 8, 2026 · Updated Sep 8, 2026

Denial of service in Bestechnic BES2300 Bluetooth Audio SoC firmware 3.x and earlier allows attackers to interrupt service via a crafted L2CAP packet. The l2cap_handle_data() handler processes the malicious packet, but published materials do not identify the invalid field, missing validation, or resulting failure mode. The attacker must be within Bluetooth reach; no authentication or user interaction is required, and the documented consequence is limited to service interruption.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Bestechnic BES2300 Bluetooth Audio SoC firmware 3.x and earlier allows attackers to interrupt service via a crafted L2CAP packet. The l2cap_handle_data() handler processes the malicious packet, but published materials do not identify the invalid field, missing validation, or resulting failure mode. The attacker must be within Bluetooth reach; no authentication or user interaction is required, and the documented consequence is limited to service interruption.

The record

CVE
CVE-2026-79376
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1284, CWE-20, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo