CVE-2020-3847
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS...
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to leak memory.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- 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
NVD Score used
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to leak memory.
- Record
CVE-2020-3847- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-20, CWE-125
- Updated
- 2026-11-02
CVE List No score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to leak memory.
- Record
CVE-2020-3847- Updated
- 2026-11-02
EUVDEUVD-2020-25112 No score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to leak memory.
- Record
EUVD-2020-25112- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g87c-v886-hqf3 No score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS...
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3. A remote attacker may be able to leak memory.
- Record
GHSA-g87c-v886-hqf3- Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-3847 is a critical vulnerability (CVSS 9.8) in Apple Macos, published April 1, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.66%, the 85th percentile. No source names a fixed version.