CVE-2021-30786
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7,...
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- 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 race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
- Record
CVE-2021-30786- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 5.1 Medium
AV:N/AC:H/Au:N/C:P/I:P/A:P - Weakness
- CWE-362
- Updated
- 2026-11-02
CVE ListNo score
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
- Record
CVE-2021-30786- Updated
- 2026-11-02
EUVDEUVD-2021-17703No score
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
- Record
EUVD-2021-17703- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mhx2-29jj-rxfrNo score
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7,...
A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
- Record
GHSA-mhx2-29jj-rxfr- Weakness
- CWE-362
- 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-2021-30786 is a high vulnerability (CVSS 7.0) 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 0.79%, the 56th percentile. No source names a fixed version.