CVE-2020-26556
Last modified
CVE-2020-26556 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.91% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bluetooth | Bluetooth Core Specification | >= 1.0b, <= 5.2 |
| Bluetooth | Mesh Profile | 1.0.0 |
| Bluetooth | Mesh Profile | 1.0.1 |
References
- https://kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
- https://kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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