CVE Tools
Sign in

CVE-2020-26558

Published: May 24, 2021Updated: Nov 4, 2025 Sources: CVE List NVD BDU csafCWE-287
4.2MEDIUM
NVD MITRE
EPSS Score
0.9%
Top 45.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:HPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-287

Affected Products

intel
commercial·USaka intel corp.
ax210 firmware
Hardware Firmware
ax201 firmware
Hardware Firmware
ax200 firmware
Hardware Firmware
ac 9560 firmware
Hardware Firmware
ac 9462 firmware
Hardware Firmware
ac 9461 firmware
Hardware Firmware
ac 9260 firmware
Hardware Firmware
ac 8265 firmware
Hardware Firmware
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
LinuxOn-premOS
Operating Systems / linux-distro
bluetooth
oss-project
bluetooth core specificationEmbedded
ICS / OT / IoT
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
linux
oss-projectaka the linux kernel
linux kernelOn-premOS
Operating Systems
and 13 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2020-26558?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://kb.cert.org/vuls/id/799380
kb.cert.org
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
lists.debian.org
and 215 more references View all →
News mentions
Could not load news mentions.

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-26558 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows