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CVE-2018-4266
A race condition was addressed with additional validation. This issue affected versions prior toiVersions prior to: OS 11.4.1, tvOS…
Medium5.9EPSS 1.8%
- Published
- Updated
- Reserved
- Assigned by
- apple
Description
A race condition was addressed with additional validation. This issue affected versions prior toiVersions prior to: OS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.8% · top 22% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
- A malicious website may be able to cause a denial of service
- CWE-362 (opens in a new tab)All about CWE-362 and its CVEs
Affected products
iOS, tvOS, watchOS, Safari, iTunes for Windows, iCloud for Windows
- affected Versions prior to: OS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6
References (6)
- https://support.apple.com/kb/HT208933 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT208938 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT208935 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT208936 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT208934 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT208932 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-4266)Record last updated .