CVE-2021-34143

MEDIUM

6.5

CVSS Score

Published: September 7, 2021 at 06:19 AM UTC

Updated: June 17, 2026 at 03:55 AM UTC

15 products affected across 1 vendorFw AC63 Bt SDKAc6966Ac6965

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.7%

Description

The Bluetooth Classic implementation in the Zhuhai Jieli AC6366C_DEMO_V1.0 does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding it with LMP_AU_Rand packets after paging procedure. User intervention is required to restart the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fw AC63 Bt SDK · Zh Jieli

95%

1.0.0

zh-jieli-ac6936 (environment) · zh-jieli-ac6951 (environment) · zh-jieli-ac6952 (environment) · zh-jieli-ac6954 (environment) · zh-jieli-ac6955 (environment) · zh-jieli-ac6956 (environment) · zh-jieli-ac6963 (environment) · zh-jieli-ac6965 (environment) · zh-jieli-ac6966 (environment) · zh-jieli-ac6969 (environment) · zh-jieli-ac6973 (environment) · zh-jieli-ac6976 (environment) · zh-jieli-ac6983 (environment) · zh-jieli-ac6986 (environment)

Ac6936 · Zh Jielidevice

80%

All versions

Ac6951 · Zh Jielidevice

80%

All versions

Ac6952 · Zh Jielidevice

80%

All versions

Ac6954 · Zh Jielidevice

80%

All versions