Security readout for executives and security teams
Plain-English summary
CVE-2020-10068 is a denial-of-service issue in Zephyr's Bluetooth subsystem. Certain duplicate or back-to-back Bluetooth DLE packets can make affected devices behave incorrectly. The documented impact is availability disruption, not data theft or tampering.
Executive priority
Treat as a moderate availability risk for Bluetooth-enabled Zephyr devices. Prioritize internet-independent field devices where local disruption has operational, safety, or support cost impact.
Technical view
The issue is classified as CWE-20 input validation. It affects Zephyr versions listed as 2.2.0 and later, and 1.14.0 and later, in the Bluetooth subsystem. CVSS 3.1 is 5.1 with local attack vector, high complexity, no privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely in embedded or IoT products that include Zephyr and enable the affected Bluetooth functionality. Confirm actual product exposure through firmware SBOMs, Zephyr versioning, and Bluetooth configuration.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation is scored local and high complexity, so business urgency depends on whether nearby interaction with deployed Bluetooth-enabled devices is realistic.
Researcher notes
Evidence supports denial of service only. The provided sources identify duplicate and back-to-back packet handling, CWE-20, affected Zephyr versions, CVSS, and Zephyr references, but do not provide confirmed exploitation or a named fixed release in the bundle.
Mitigation direction
- Check Zephyr vendor guidance for fixed versions or backports.
- Review the referenced Zephyr security advisory and pull requests.
- Update affected firmware where vendor-supported fixes are available.
- Disable affected Bluetooth functionality if it is unnecessary and vendor-approved.
- Prioritize devices in exposed, unattended, or safety-sensitive environments.
Validation and detection
- Inventory products and firmware using Zephyr Bluetooth.
- Confirm Zephyr versions against the affected version statements.
- Review build configuration for Bluetooth DLE usage.
- Check vendor advisories for patched release identifiers.
- Validate remediation with approved regression and Bluetooth stability testing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-10068 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H1.43.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.1MediumVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/zephyrproject-rtos/zephyr/pull/23091CVE reference · x_refsource_MISC
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-78CVE reference · x_refsource_MISC
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10068CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23707CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23708CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23964CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.