CVE-2020-26555

MEDIUMNVD 5.45.4—

5.4

Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification 1.0B through 5.2 may permit an unauthenticated nearby device to spoof the BD_ADDR of the peer device to complete pairing without knowledge of the PIN.

CVSS v3: 5.4
EG Score: 5.4(medium)
EPSS: 31.1%
KEV: Not listed

Published

May 24, 2021

Last Modified

November 4, 2025

References (9)

cve@mitrehttps://kb.cert.org/vuls/id/799380
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/
cve@mitrehttps://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
cve@mitrehttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html
af854a3a-2127-422b-91ae-364da2661108https://kb.cert.org/vuls/id/799380
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ/
af854a3a-2127-422b-91ae-364da2661108https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
af854a3a-2127-422b-91ae-364da2661108https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/799380

Patch Availability(4)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-virtual-lts-xenial (4.4.0.222.193) @ trusty	2026-05-26	ubuntu
redhat	kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10	2024-07-08	redhat
redhat	kernel-0:4.18.0-553.8.1.el8_10	2024-07-02	redhat
redhat	kernel-0:5.14.0-427.13.1.el9_4	2024-04-30	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-863Incorrect Authorization

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-26555?

CVE-2020-26555 is a medium vulnerability published on May 24, 2021. Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification 1.0B through 5.2 may permit an unauthenticated nearby device to spoof the BD_ADDR of the peer device to complete pairing without knowledge of the PIN.

When was CVE-2020-26555 disclosed?

CVE-2020-26555 was first published in the National Vulnerability Database on May 24, 2021, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-26555 actively exploited?

CVE-2020-26555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-26555?

CVE-2020-26555 has a CVSS v3 base score of 5.4 (NVD).

How do I remediate CVE-2020-26555?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-26555, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-26555

Published

Last Modified

References (9)

Patch Availability(4)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-26555?

Same vendor

Same CWE

CVE-2020-26555

📅 Published

🔄 Last Modified

🔗 References (9)

Patch Availability(4)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-26555?

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References (9)

Frequently asked(5)

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