Security readout for executives and security teams
CVE-2020-13603 is an integer overflow issue in Zephyr RTOS memory allocation functions. In practical terms, certain embedded devices using the affected Zephyr versions may miscalculate allocation sizes, creating memory-safety risk. The provided CVSS data indicates serious impact is possible, but exploitation conditions are restrictive. Exposure is most likely in embedded, IoT, or operational technology products built on Zephyr versions identified in the source bundle. The evidence does not support assuming broad remote exposure. Asset owners need product-level firmware and SBOM confirmation. Treat this as a moderate embedded-device risk. The business concern is product exposure and patch availability, not immediate internet-scale exploitation. Prioritize inventory confirmation and vendor remediation tracking for deployed Zephyr-based devices. Mitigation focus: Identify products and firmware that include Zephyr RTOS.; Check vendor and Zephyr advisory guidance for fixed or unaffected versions.; Prioritize devices with physical access by untrusted users..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2020-13603 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
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:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H0.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.9MediumVector: CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.