Security readout for executives and security teams
Plain-English summary
This flaw is in Zephyr's Bluetooth implementation. Under a full-buffer error condition, invalid packet handling can corrupt memory, potentially affecting confidentiality, integrity, and availability on devices using affected Zephyr versions.
Executive priority
Prioritize affected Bluetooth-enabled products, especially deployed devices where firmware updates are slow. The issue is high severity, but the provided evidence does not support claims of active exploitation.
Technical view
CVE-2020-10061 is a CWE-119 memory corruption issue caused by improper handling of the full-buffer case in Zephyr Bluetooth packet processing. The CVSS 3.1 score is 8.1 with local attack vector, high complexity, no privileges, no user interaction, and scope change.
Likely exposure
Exposure is most likely in embedded, IoT, or product firmware using Zephyr Bluetooth from the affected version lines named by the CVE source. Internet-facing exposure is not indicated by the provided evidence.
Exploitation context
The source bundle does not show CISA KEV listing or public active exploitation evidence. Exploitation is rated local and high-complexity by CVSS, so physical or nearby access may matter more than network perimeter exposure.
Researcher notes
Key gaps are fixed-version details, exploitability constraints beyond CVSS, and product-specific exposure. Focus analysis on Zephyr Bluetooth buffer handling, affected branches, and whether downstream vendors incorporated the referenced fixes.
Mitigation direction
- Inventory products and firmware that include Zephyr Bluetooth.
- Compare embedded Zephyr versions against the vendor advisory.
- Review Zephyr PRs and advisory for the vendor-supported fixed release.
- Update affected firmware through normal product release channels.
- If updates are unavailable, check Zephyr guidance for supported mitigations.
Validation and detection
- Confirm whether Bluetooth support is compiled into the firmware.
- Record the Zephyr version and branch used in each shipped build.
- Review SBOMs, build manifests, or source dependencies for Zephyr references.
- Test only in authorized lab conditions using vendor-safe regression cases.
- Track remediation evidence by product, firmware version, and deployment status.
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-119: 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-2020-10061 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
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/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:C/C:H/I:H/A:H1.46Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-75CVE reference · x_refsource_MISC
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10061CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23516CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23517CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23547CVE reference · x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23091CVE 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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.