A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system.
A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system. This situation could lead to the unauthorized pairing of certain Bluetooth devices without any form of authentication. Versions before bluez 5.51 are vulnerable.
- Published
- Jan 28, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-863
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Report tools
Action score
13
Monitor
Low priority for now.
- CVSS
- 13 / 40 · 3.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CNA vs NVD score
- NVD
- 3.3
- CNA · redhat
- 4.5
- 1.2 point gap
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| bluez | bluez | cpe:2.3:a:bluez:bluez |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- bluez bluezbefore 5.51
- canonical ubuntu linux18.04
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
The Bluez Project bluez
- before 5.51affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | bluez | before 5.54-1 | 5.54-1 |
| Red Hat:enterprise_linux:7::client | bluez | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:7::client | bluez-cups | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:7::client | bluez-debuginfo | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:7::client | bluez-hid2hci | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:7::client | bluez-libs | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:7::client | bluez-libs-devel | before 0:5.44-6.el7 | 0:5.44-6.el7 |
| Red Hat:enterprise_linux:8::appstream | bluez-cups | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-cups-debuginfo | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-debuginfo | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-debugsource | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-hid2hci-debuginfo | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-libs-debuginfo | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::appstream | bluez-obexd-debuginfo | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::baseos | bluez | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::baseos | bluez-hid2hci | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::baseos | bluez-libs | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::baseos | bluez-obexd | before 0:5.50-3.el8 | 0:5.50-3.el8 |
| Red Hat:enterprise_linux:8::crb | bluez-libs-devel | before 0:5.50-3.el8 | 0:5.50-3.el8 |
Same product
bluez: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-8805BlueZ HID over GATT Profile Improper Access Control Remote Code Execution Vulnerability36Monitor
- CVE-2022-0204A heap overflow vulnerability was found in bluez in versions prior to 5.63.36Monitor
- CVE-2021-43400An issue was discovered in gatt-database.c in BlueZ 5.61.36Monitor
- CVE-2022-39177BlueZ before 5.59 allows physically proximate attackers to cause a denial of service because malformed and invalid capabilities can be proce35Monitor
- CVE-2022-39176BlueZ before 5.59 allows physically proximate attackers to obtain sensitive information because profiles/audio/avrcp.c does not validate par35Monitor
- CVE-2019-8922A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48.35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:bluez | 5.54-1 · Debian:12 | Package registry (OSV) |
| red hat:bluez | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-cups | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-cups-debuginfo | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bluez-debuginfo | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-debugsource | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bluez-hid2hci | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-hid2hci-debuginfo | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bluez-libs | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-libs-debuginfo | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bluez-libs-devel | 0:5.44-6.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:bluez-obexd | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:bluez-obexd-debuginfo | 0:5.50-3.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-20-189 · Apr 1, 2020(Red Hat Enterprise Linux 7 Güvenlik Güncellemesi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-863 · Incorrect AuthorizationCVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.