CVE-2020-13595

MEDIUM
6.5
CVSS Score
Published: August 31, 2020 at 02:59 PM UTC
Updated: June 17, 2026 at 02:53 AM UTC
2 products affected across 1 vendorEsp IdfEsp32

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%

Description

The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.0 through 4.2 (for ESP32 devices) returns the wrong number of completed BLE packets and triggers a reachable assertion on the host stack when receiving a packet with an MIC failure. An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.

Affected

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

4.0.0 ≤ v ≤ 4.2
espressif-esp32 (environment)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_MISCThird Party Advisory
https://asset-group.github.io/cves.html
x_refsource_MISCThird Party Advisory
https://github.com/espressif/esp32-bt-lib

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

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