Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2…
Priority LOW 21CWE-287Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 3 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-287.
Summary
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.
Why it matters now
EPSS 0.00879 59th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 3 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 34
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:* | 2.1 – 5.2 | Vulnerable | Bluetooth |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.13 | Vulnerable | Linux |
| cpe:2.3:o:intel:ax210_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ax210:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ax201_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ax201:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ax200_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ax200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:* Versions 2.1 – 5.2 Vulnerable ·Bluetooth
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.13 Vulnerable ·Linux
- cpe:2.3:o:intel:ax210_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ax210:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ax201_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ax201:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ax200_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ax200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
Show 24 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:intel:ac_9560_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_9560:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_9462_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_9462:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_9461_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_9461:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_9260_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_9260:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_8265_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_8265:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_8260_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_8260:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_3168_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_3168:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_7265_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_7265:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_3165_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_3165:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ax1675_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ax1675:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ax1650_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ax1650:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:ac_1550_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:ac_1550:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:o:intel:ac_9560_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_9560:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_9462_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_9462:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_9461_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_9461:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_9260_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_9260:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_8265_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_8265:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_8260_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_8260:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_3168_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_3168:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_7265_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_7265:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_3165_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_3165:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ax1675_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ax1675:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ax1650_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ax1650:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:ac_1550_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:ac_1550:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
Remediation
Red Hat 1 advisory
- RHSA-2021:4432 Released 2021-11-09 · Red Hat rating Moderatebluez security update
- Red Hat CodeReady Linux Builder (v. 8) bluez-libs-devel-5.56-1.el8
- Red Hat Enterprise Linux AppStream (v. 8) bluez-cups-5.56-1.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bluez-5.56-1.el8, bluez-hid2hci-5.56-1.el8, bluez-libs-5.56-1.el8 +1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2021:4432 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2021:4432 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2021:4432 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-26558
- 2026-10-03 Alias added: GHSA-7g33-jchx-2fjc
References
Advisory 10
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
- https://kb.cert.org/vuls/id/799380
- FEDORA-2021-a35b44fd9f
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update
- [debian-lts-announce] 20210626 [SECURITY] [DLA 2692-1] bluez security update
- DSA-4951
- GLSA-202209-16
Sources
- CVE-2020-26558 · CVE Program
- CVE-2020-26558 · NVD
- FIRST EPSS
- GHSA-7g33-jchx-2fjc · GitHub Advisory Database · CC BY 4.0
- CVE-2020-26558 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences