CVE-2020-26555

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.

Published: 2021-05-24 Last update: 2025-11-04 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-26555 is rated Low Risk (32.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.12%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-26555

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-18 0.25% 0.12% -0.12%
2 2025-11-21 0.10% 0.25% +0.15%
3 2025-11-18 — 0.10% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-26555

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.5 [email protected]
4.8 2.0 MEDIUM
AV:A/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 6.5 4.9 [email protected]

Weakness enumeration for CVE-2020-26555

OS Trackers for CVE-2020-26555

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2020-26555
suse medium — https://www.suse.com/security/cve/CVE-2020-26555/
ubuntu medium CVE-2020-26555 medium priority: Ubuntu including 168 source packages (linux, linux-allwinner, …), 2164 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1680, not-affected 209, released 201, ignored 73, needed 1. https://ubuntu.com/security/CVE-2020-26555

Affected software / configurations for CVE-2020-26555

Vendor Product Version Raw CPE
bluetooth bluetooth_core_specification >= 1.1b, <= 5.2 cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*
fedoraproject fedora 34 cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
intel ax210_firmware — cpe:2.3:o:intel:ax210_firmware:-:*:*:*:*:*:*:*
intel ax201_firmware — cpe:2.3:o:intel:ax201_firmware:-:*:*:*:*:*:*:*
intel ax200_firmware — cpe:2.3:o:intel:ax200_firmware:-:*:*:*:*:*:*:*
intel ac_9560_firmware — cpe:2.3:o:intel:ac_9560_firmware:-:*:*:*:*:*:*:*
intel ac_9462_firmware — cpe:2.3:o:intel:ac_9462_firmware:-:*:*:*:*:*:*:*
intel ac_9461_firmware — cpe:2.3:o:intel:ac_9461_firmware:-:*:*:*:*:*:*:*
intel ac_9260_firmware — cpe:2.3:o:intel:ac_9260_firmware:-:*:*:*:*:*:*:*
intel ac_8265_firmware — cpe:2.3:o:intel:ac_8265_firmware:-:*:*:*:*:*:*:*
intel ac_8260_firmware — cpe:2.3:o:intel:ac_8260_firmware:-:*:*:*:*:*:*:*
intel ac_3168_firmware — cpe:2.3:o:intel:ac_3168_firmware:-:*:*:*:*:*:*:*
intel ac_7265_firmware — cpe:2.3:o:intel:ac_7265_firmware:-:*:*:*:*:*:*:*
intel ac_3165_firmware — cpe:2.3:o:intel:ac_3165_firmware:-:*:*:*:*:*:*:*
intel killer_wi-fi_6e_ax1675_firmware — cpe:2.3:o:intel:killer_wi-fi_6e_ax1675_firmware:-:*:*:*:*:*:*:*
intel killer_wi-fi_6_ax1650_firmware — cpe:2.3:o:intel:killer_wi-fi_6_ax1650_firmware:-:*:*:*:*:*:*:*
intel killer_ac_1550_firmware — cpe:2.3:o:intel:killer_ac_1550_firmware:-:*:*:*:*:*:*:*

References for CVE-2020-26555

cvelogic Threat Intelligence