CVE-2021-3658

Name: CVE-2021-3658
Creator: NVD / NIST
Published: 2022-03-02T23:15:08.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-3658 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.78%

51.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bluez	Bluez	< 5.61
Fedoraproject	Fedora	34

References

https://bugzilla.redhat.com/show_bug.cgi?id=1984728Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20220407-0002/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1984728Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
https://github.com/bluez/bluez/commit/b497b5942a8beb8f89ca1c359c54ad67ec843055Patch, Third Party Advisory
https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/89Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html
https://security.netapp.com/advisory/ntap-20220407-0002/Third Party Advisory

Timeline

Published: Mar 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3658?

How severe is CVE-2021-3658?

CVE-2021-3658 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3658?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3658?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST