Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacks
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.
- BDU:2021-00474
- openSUSE-SU-2020:1153-1
- openSUSE-SU-2020:1236-1
- openSUSE-SU-2021:0242-1
- RHSA-2024:9315
- SUSE-SU-2020:2102-1
- SUSE-SU-2020:2105-1
- SUSE-SU-2020:2119-1
- SUSE-SU-2020:2122-1
- SUSE-SU-2020:2134-1
- SUSE-SU-2020:2152-1
- SUSE-SU-2020:2487-1
- SUSE-SU-2020:2541-1
- SUSE-SU-2020:2575-1
- SUSE-SU-2020:2605-1
- SUSE-SU-2020:2610-1
- SUSE-SU-2020:2623-1
- SUSE-SU-2024:2360-1
- SUSE-SU-2024:2365-1
- SUSE-SU-2024:2561-1
- Published
- May 19, 2020
- Updated
- Jun 16, 2026
- EPSS
- 2.4% · 83th percentile
- CWE
- CWE-757
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.4 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.4%
CNA vs NVD score
- NVD
- 5.4
- CNA · certcc
- 5.4
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| bluetooth | bluetooth core | cpe:2.3:a:bluetooth:bluetooth_core |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- bluetooth bluetooth coreup to 5.2 inclusive
- opensuse leap15.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (certcc). Independent of NVD's CPE analysis and usually ahead of it.
Bluetooth BR/EDR
- 5.2 and later · up to and including 5.2affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| openSUSE:Leap 15.1 | kernel-debug | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-default | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-docs | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-kvmsmall | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-obs-build | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-obs-qa | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-source | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-syms | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.1 | kernel-vanilla | before 4.12.14-lp151.28.59.1 | 4.12.14-lp151.28.59.1 |
| openSUSE:Leap 15.2 | bbswitch | before 0.8-lp152.6.2.1 | 0.8-lp152.6.2.1 |
| openSUSE:Leap 15.2 | crash | before 7.2.8-lp152.3.2.1 | 7.2.8-lp152.3.2.1 |
| openSUSE:Leap 15.2 | dpdk | before 19.11.1-lp152.2.5.1 | 19.11.1-lp152.2.5.1 |
| openSUSE:Leap 15.2 | drbd | before 9.0.22~1+git.fe2b5983-lp152.2.2.1 | 9.0.22~1+git.fe2b5983-lp152.2.2.1 |
| openSUSE:Leap 15.2 | hdjmod | before 1.28-lp152.6.2.1 | 1.28-lp152.6.2.1 |
| openSUSE:Leap 15.2 | kernel-debug | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-default | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-docs | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-kvmsmall | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-obs-build | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-obs-qa | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-preempt | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
| openSUSE:Leap 15.2 | kernel-rt | before 5.3.18-lp152.3.5.1 | 5.3.18-lp152.3.5.1 |
| openSUSE:Leap 15.2 | kernel-rt_debug | before 5.3.18-lp152.3.5.1 | 5.3.18-lp152.3.5.1 |
| openSUSE:Leap 15.2 | kernel-source | before 5.3.18-lp152.36.1 | 5.3.18-lp152.36.1 |
+96
Same product
bluetooth: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-10134Bluetooth devices supporting LE and specific BR/EDR implementations are vulnerable to method confusion attacks25Monitor
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 |
|---|---|---|
| opensuse:bbswitch | 0.8-lp152.6.2.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:crash | 7.2.8-lp152.3.2.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:dpdk | 19.11.1-lp152.2.5.1 · openSUSE:Leap 15.2 | Package registry (OSV) |
| opensuse:kernel-debug | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-default | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-docs | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-build | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-source | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-syms | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| opensuse:kernel-vanilla | 4.12.14-lp151.28.59.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| red hat:bpftool-debuginfo | 0:7.4.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel-matched | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debuginfo-common-aarch64 | 0:5.14.0-503.11.1.el9_5 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| suse:kernel-azure | 5.3.18-18.12.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | Package registry (OSV) |
| suse:kernel-default | 5.3.18-24.9.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-24.9.1.9.2.6 · SUSE:Linux Enterprise Module for Basesystem 15 SP2 | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-24.9.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP2 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP2_Update_1 | 1-5.3.6 · SUSE:Linux Enterprise Live Patching 15 SP2 | Package registry (OSV) |
| suse:kernel-obs-build | 5.3.18-24.9.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP2 | Package registry (OSV) |
+6
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2020-06-01 |
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.
- Published
- First PoC+12 d
- TodaySep 30, 2026+2325 d
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).
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-757 · Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.
Attack patterns (CAPEC)
ATT&CK techniques
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.html
- francozappa.github.io/about-bias/
- kb.cert.org/vuls/id/647177/
- www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.