6.5

CVE-2021-3658: bluez Incorrect Authorization

CVSS: 6.5v3.1MediumModified
AliasesMGASA-2021-0395UBUNTU-CVE-2021-3658DEBIAN-CVE-2021-3658
Published 02-03-2022Last modified 15-04-2026
Open JSON

Vulnerability summary

CVE-2021-3658 is a medium (CVSS 6.5) Incorrect Authorization vulnerability in bluez. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.79%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 4
DLA-3879-1SUSE-SU-2022:3687-1SUSE-SU-2022:3691-1SUSE-SU-2022:3981-1USN-5155-1

Timeline

  1. 02-03-2022
    PublishedVulnerability first disclosed.
  2. 15-04-2026
    Last modifiedVulnerability information updated.

Description

bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up. If a device is powered down while discoverable, it will be discoverable when powered on again. This could lead to inadvertent exposure of the bluetooth stack to physically nearby attackers.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.79%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

0.00 pp

From 0.79% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.79%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Bluez1 product
Debian1 product
  • bluez< 5.61-1
Fedoraproject1 product
Mageia1 product
  • bluez< 5.55-3.2.mga8
Ubuntu1 product
  • bluez< 5.53-0ubuntu3.4

5 vendors · 5 products

References

12 links
Show all 12 references