CVE-2021-28135

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Published Sep 7, 2021 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (crash) in ESP32 by flooding the target device with LMP Feature Response data.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-14834	The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service (crash) in ESP32 by flooding the target device with LMP Feature Response data.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.827% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
https://github.com/espressif/esp-idf
https://github.com/espressif/esp32-bt-lib
https://www.espressif.com/en/products/socs/esp32

History

No history.

Subscriptions

Espressif Esp-idf

Weaknesses

NVD-CWE-Other

Sources

CVE record Updated: Aug 3, 2024, 9:33 PM

Status: PUBLISHED
Assigner: mitre
Published: Sep 7, 2021, 5:56 AM
Updated: Aug 3, 2024, 9:33 PM
Reserved: Mar 11, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:45 AM

Status: Modified
Published: Sep 7, 2021, 6:15 AM
Modified: Jun 17, 2026, 3:45 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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