Security readout for executives and security teams
This is a low-severity Zephyr RTOS issue where default permissions around settings stored with littlefs may expose limited confidential information. The CVSS vector requires local access and user interaction, with no indicated integrity or availability impact. It matters mainly for embedded products that store sensitive configuration in Zephyr settings on littlefs. Exposure is likely limited to products or firmware builds using affected Zephyr versions and the settings subsystem backed by littlefs. Systems not using Zephyr, not using littlefs for settings, or not storing sensitive data there are less likely to be materially exposed. Handle through normal vulnerability management unless the affected devices store secrets or operate in untrusted physical environments. Prioritize confirmation of product exposure and vendor-fixed firmware availability before scheduling broad remediation. Mitigation focus: Check the Zephyr GitHub advisory for fixed versions and vendor guidance.; Review Talos report details before changing production firmware.; Inventory products using Zephyr settings with littlefs..
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
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ATT&CK lookup starting points
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CWE-276: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-13599 mapping review
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Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
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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:L/PR:N/UI:R/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1199CVE 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.
Incorrect Default Permissions
Incorrect Default Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.