CVE-2021-30748
A memory corruption issue was addressed with improved state management. This issue is fixed in...
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. An application may be able to execute arbitrary code with kernel privileges.
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
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. An application may be able to execute arbitrary code with kernel privileges.
- Record
CVE-2021-30748- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE ListNo score
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. An application may be able to execute arbitrary code with kernel privileges.
- Record
CVE-2021-30748- Updated
- 2026-11-02
EUVDEUVD-2021-17665No score
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. An application may be able to execute arbitrary code with kernel privileges.
- Record
EUVD-2021-17665- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v33h-cmh6-v795No score
A memory corruption issue was addressed with improved state management. This issue is fixed in...
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. An application may be able to execute arbitrary code with kernel privileges.
- Record
GHSA-v33h-cmh6-v795- Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30748 is a high vulnerability (CVSS 7.8) in Apple Ios, published September 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.35%, the 71st percentile. No source names a fixed version.