CVE-2018-4276
A null pointer dereference was addressed with improved validation. This issue affected versions...
A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.
- Record
CVE-2018-4276- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-476
- Updated
- 2026-11-02
CVE List No score
A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.
- Record
CVE-2018-4276- Updated
- 2026-11-02
EUVDEUVD-2018-16062 No score
A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.
- Record
EUVD-2018-16062- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qmwh-43gh-r2cg
A null pointer dereference was addressed with improved validation. This issue affected versions...
A null pointer dereference was addressed with improved validation. This issue affected versions prior to macOS High Sierra 10.13.6.
- Record
GHSA-qmwh-43gh-r2cg- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- 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-2018-4276 is a high vulnerability (CVSS 7.5) in Apple Macos, published April 3, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.23%, the 69th percentile. No source names a fixed version.