CVE-2020-16991
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
- Low
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Azure Sphere Unsigned Code Execution Vulnerability
Azure Sphere Unsigned Code Execution Vulnerability
- Record
CVE-2020-16991- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2020-8948
Azure Sphere Unsigned Code Execution Vulnerability
- Record
EUVD-2020-8948- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5wcg-gp2m-75xf
Azure Sphere Unsigned Code Execution Vulnerability This CVE ID is unique from CVE-2020-16970, CVE...
Azure Sphere Unsigned Code Execution Vulnerability This CVE ID is unique from CVE-2020-16970, CVE-2020-16982, CVE-2020-16984, CVE-2020-16987, CVE-2020-16994.
- Record
GHSA-5wcg-gp2m-75xf- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L - Updated
- 2026-11-02
NVD
Azure Sphere Unsigned Code Execution Vulnerability
- Record
CVE-2020-16991- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:P/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-16991 is a high vulnerability (CVSS 7.3) in Microsoft Azure Sphere, published November 11, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.70%, the 77th percentile. No source names a fixed version.