Privilege escalation in BlueZ

Published: 2020-03-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0556
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Universal components / Libraries / Libraries used by multiple products

Vendor BlueZ Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26047

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0556

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper access control in subsystem for BlueZ. A remote attacker on the local network can gain elevated privileges on the target system and cause a denial of service (DoS) condition.


Install updates from vendor's website.

Vulnerable software versions

BlueZ: 5.0 - 5.52

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.