CVE-2020-26558
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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Timeline
ID reserved
By mitre
- 8 months later
· 8 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.2 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.88% · top 41% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.2.
Weakness
Affected products
n/a
- affected n/a
References (11)
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ (opens in a new tab)x_refsource_MISCx_transferred
- https://kb.cert.org/vuls/id/799380 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2021-a35b44fd9f (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20210626 [SECURITY] [DLA 2692-1] bluez security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4951 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-202209-16 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://www.kb.cert.org/vuls/id/799380 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-26558)Record last updated .