CVE-2020-10021
Out-of-bounds write in USB Mass Storage with unaligned sizes
HIGH
7.8
CVSS Score
Published: May 11, 2020 at 10:26 PM UTC
Updated: June 17, 2026 at 02:47 AM UTC
2 products affected across 2 vendorsZephyrZephyr
Using zephyr by zephyrproject-rtos?
Get instant alerts when new vulnerabilities affect zephyr - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
Description
Out-of-bounds Write in the USB Mass Storage memoryWrite handler with unaligned Sizes See NCC-ZEP-024, NCC-ZEP-025, NCC-ZEP-026 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 1.14.12.1.0 ≤ v < 2.2.0
Affected range stops below 2.2.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/zephyrproject-rtos/zephyr/pull/23240x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/zephyrproject-rtos/zephyr/pull/23455x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/zephyrproject-rtos/zephyr/pull/23456x_refsource_MISCThird Party Advisory
Source: [email protected]
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-26CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card