AUGUST 5, 2026
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Case File

CVE-2021-31615

MEDIUM · CVSS 5.3 EPSS 0.40%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-25 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. See the original NVD description below for full technical details.

CVE
CVE-2021-31615
Severity
MEDIUM
CVSS
5.3
EPSS
0.40%

Original NVD Description

Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core Specifications 4.0 through 5.2 may permit an adjacent device to inject a crafted packet during the receive window of the listening device before the transmitting device initiates its packet transmission to achieve full MITM status without terminating the link. When applied against devices establishing or using encrypted links, crafted packets may be used to terminate an existing link, but will not compromise the confidentiality or integrity of the link.

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