CVE-2020-26556: bluetooth bluetooth_core_specification

CVSS: 7.5v3.1HighModified

AliasesUBUNTU-CVE-2020-26556

Published 24-05-2021Last modified 04-08-2024

Vulnerability summary

CVE-2020-26556 is a high (CVSS 7.5) vulnerability in bluetooth bluetooth_core_specification. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.2% of scored vulnerabilities.

Overall risk

30/100

0100

Medium · default modelHow is this calculated?

CVSS score

7.5/10

010

High · v3.1 (NVD)

EPSS score

0.91%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Timeline

24-05-2021
PublishedVulnerability first disclosed.
04-08-2024
Last modifiedVulnerability information updated.

Description

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.

CVSS metrics

3 scores · 2 sources · 2 versions

v3.17.5v2.02.9

EPSS trend

Probability

0.91%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.91% on 20-09-2026

20-09-202620-10-2026

EPSS score

0.91%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-307Improper Restriction of Excessive Authentication AttemptsThe product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

Affected systems

Ubuntu159 products

bluezAll versions (No fix recorded)
linuxAll versions (No fix recorded)
linux-allwinner-5.19All versions (No fix recorded)
linux-awsAll versions (No fix recorded)
linux-aws-5.0All versions (No fix recorded)

linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)
linux-aws-5.15All versions (No fix recorded)
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4All versions (No fix recorded)
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.14All versions (No fix recorded)
linux-aws-6.17All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-6.8All versions (No fix recorded)
linux-aws-fipsAll versions (No fix recorded)
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded)
linux-azure-4.15All versions (No fix recorded)
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15All versions (No fix recorded)
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4All versions (No fix recorded)
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.11All versions (No fix recorded)
linux-azure-6.14All versions (No fix recorded)
linux-azure-6.17All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-6.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded)
linux-azure-fde-5.15All versions (No fix recorded)
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.14All versions (No fix recorded)
linux-azure-fde-6.17All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fde-6.8All versions (No fix recorded)
linux-azure-fipsAll versions (No fix recorded)
linux-azure-nvidiaAll versions (No fix recorded)
linux-azure-nvidia-6.14All versions (No fix recorded)
linux-bluefieldAll versions (No fix recorded)
linux-fipsAll versions (No fix recorded)
linux-gcpAll versions (No fix recorded)
linux-gcp-4.15All versions (No fix recorded)
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15All versions (No fix recorded)
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4All versions (No fix recorded)
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.11All versions (No fix recorded)
linux-gcp-6.14All versions (No fix recorded)
linux-gcp-6.17All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-6.8All versions (No fix recorded)
linux-gcp-edgeAll versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded)
linux-gkeAll versions (No fix recorded)
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeopAll versions (No fix recorded)
linux-gkeop-5.15All versions (No fix recorded)
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15All versions (No fix recorded)
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4All versions (No fix recorded)
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.11All versions (No fix recorded)
linux-hwe-6.14All versions (No fix recorded)
linux-hwe-6.17All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-6.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibmAll versions (No fix recorded)
linux-ibm-5.15All versions (No fix recorded)
linux-ibm-5.4All versions (No fix recorded)
linux-ibm-6.8All versions (No fix recorded)
linux-intelAll versions (No fix recorded)
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-intel-iotgAll versions (No fix recorded)
linux-intel-iotg-5.15All versions (No fix recorded)
linux-iotAll versions (No fix recorded)
linux-kvmAll versions (No fix recorded)
linux-lowlatencyAll versions (No fix recorded)
linux-lowlatency-hwe-5.15All versions (No fix recorded)
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.11All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lowlatency-hwe-6.8All versions (No fix recorded)
linux-lts-xenialAll versions (No fix recorded)
linux-nvidiaAll versions (No fix recorded)
linux-nvidia-6.11All versions (No fix recorded)
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-6.8All versions (No fix recorded)
linux-nvidia-lowlatencyAll versions (No fix recorded)
linux-nvidia-tegraAll versions (No fix recorded)
linux-nvidia-tegra-5.15All versions (No fix recorded)
linux-nvidia-tegra-igxAll versions (No fix recorded)
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.11All versions (No fix recorded)
linux-oem-6.14All versions (No fix recorded)
linux-oem-6.17All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8All versions (No fix recorded)
linux-oracleAll versions (No fix recorded)
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15All versions (No fix recorded)
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.14All versions (No fix recorded)
linux-oracle-6.17All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-oracle-6.8All versions (No fix recorded)
linux-raspiAll versions (No fix recorded)
linux-raspi-5.4All versions (No fix recorded)
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded)
linux-realtime-6.14All versions (No fix recorded)
linux-realtime-6.17All versions (No fix recorded)
linux-realtime-6.8All versions (No fix recorded)
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15All versions (No fix recorded)
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.14All versions (No fix recorded)
linux-riscv-6.17All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-riscv-6.8All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinxAll versions (No fix recorded)
linux-xilinx-zynqmpAll versions (No fix recorded)

Show all 159

Bluetooth2 products

bluetooth_core_specification≥ 1.0b, ≤ 5.2
mesh_profile1.0.0 | 1.0.1

2 vendors · 161 products

References

6 links

www.kb.cert.org/vuls/id/799380Third Party AdvisoryX Refsource CERT VNUS Government Resource
www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/X Refsource MISCREPORTVendor Advisory
kb.cert.org/vuls/id/799380X Refsource MISCREPORTThird Party AdvisoryUS Government Resource
ubuntu.com/security/CVE-2020-26556REPORT
www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/malleable/REPORT
www.cve.org/CVERecord?id=CVE-2020-26556REPORT

Vulnerability summary

Timeline

Description

CVSS metrics

EPSS trend

Known exploited

Public exploits

Weaknesses

Affected systems

References

Related vulnerabilities