CVE-2021-42304
Azure RTOS Elevation of Privilege Vulnerability
Azure RTOS Elevation of Privilege Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Azure RTOS Elevation of Privilege Vulnerability
Azure RTOS Elevation of Privilege Vulnerability
- Record
CVE-2021-42304- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-29279
Azure RTOS Elevation of Privilege Vulnerability
- Record
EUVD-2021-29279- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xjmr-q9w7-m3w7
Azure RTOS Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-42302, CVE...
Azure RTOS Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-42302, CVE-2021-42303.
- Record
GHSA-xjmr-q9w7-m3w7- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - Weakness
- CWE-269
- Updated
- 2026-11-02
NVD
Azure RTOS Elevation of Privilege Vulnerability
- Record
CVE-2021-42304- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-269
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42304 is a medium vulnerability (CVSS 6.6) in Microsoft Azure Real Time Operating System, published November 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. No source names a fixed version.