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CVE-2021-3658

MEDIUM
6.5
CVSS Score
Published: March 2, 2022 at 10:11 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 2 vendorsFedoraBlueZ

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

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

BlueZ· Bluez
95%
v ≥ 5.61v < 5.61
Affected range stops below 5.61, so it looks safe — our inference, not a vendor statement
Fedora· Fedora Projectrpm
95%
34

References (6)

x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1984728
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220407-0002/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

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