CVE-2021-27080
Azure Sphere Unsigned Code Execution Vulnerability
Azure Sphere Unsigned Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Azure Sphere Unsigned Code Execution Vulnerability
Azure Sphere Unsigned Code Execution Vulnerability
- Record
CVE-2021-27080- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
EUVDEUVD-2021-13851
Azure Sphere Unsigned Code Execution Vulnerability
- Record
EUVD-2021-13851- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rqr5-7m2q-c54f
Azure Sphere Unsigned Code Execution Vulnerability This CVE ID is unique from CVE-2021-27074.
Azure Sphere Unsigned Code Execution Vulnerability This CVE ID is unique from CVE-2021-27074.
- Record
GHSA-rqr5-7m2q-c54f- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Azure Sphere Unsigned Code Execution Vulnerability
- Record
CVE-2021-27080- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - 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-2021-27080 is a critical vulnerability (CVSS 9.3) in Microsoft Azure Sphere, published March 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.28%, the 70th percentile. No source names a fixed version.