VULNERABILITY INTELLIGENCE
CVE-2021-28136
CVSS score6.5 MEDIUM
EPSS probability0.84%
CISA KEVNot currently listed
Published2021-09-07
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly handle the reception of multiple LMP IO Capability Request packets during the pairing process, allowing attackers in radio range to trigger memory corruption (and consequently a crash) in ESP32 via a replayed (duplicated) LMP packet.
Weakness classification
- nvd@nist.gov: CWE-787
Primary references
- cve@mitre.org — Technical Description, Third Party Advisory
- cve@mitre.org — Product, Third Party Advisory
- cve@mitre.org — Product, Third Party Advisory
- cve@mitre.org — Product, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Technical Description, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Product, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Product, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Product, Vendor Advisory