CVE-2021-30828
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005...
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to read arbitrary files as root.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to read arbitrary files as root.
- Record
CVE-2021-30828- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.9 Medium
AV:L/AC:L/Au:N/C:C/I:N/A:N - Updated
- 2026-11-02
CVE List No score
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to read arbitrary files as root.
- Record
CVE-2021-30828- Updated
- 2026-11-02
EUVDEUVD-2021-17745 No score
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to read arbitrary files as root.
- Record
EUVD-2021-17745- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mgg2-p2x6-83vp
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005...
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to read arbitrary files as root.
- Record
GHSA-mgg2-p2x6-83vp- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-668
- 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-2021-30828 is a medium vulnerability (CVSS 5.5) in Apple Macos, published October 19, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. No source names a fixed version.