CVE-2018-4207
In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.04% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- apple/safari · apple/iphone os · apple/tvos · apple/watchos · apple/icloud · apple/itunes · canonical/ubuntu linux · webkitgtk/webkitgtk\+
- Source
- product-security@apple.com
EPSS 2.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://security.gentoo.org/glsa/201812-04Third Party Advisory
- https://support.apple.com/HT208693%2C
- https://support.apple.com/HT208694Vendor Advisory
- https://support.apple.com/HT208695%2C
- https://support.apple.com/HT208696%2C
- https://support.apple.com/HT208697%2C
- https://support.apple.com/HT208698%2C
- https://usn.ubuntu.com/3781-1/Third Party Advisory
- https://security.gentoo.org/glsa/201812-04Third Party Advisory
- https://support.apple.com/HT208693%2C
- https://support.apple.com/HT208694Vendor Advisory
- https://support.apple.com/HT208695%2C
- https://support.apple.com/HT208696%2C
- https://support.apple.com/HT208697%2C
- https://support.apple.com/HT208698%2C
- https://usn.ubuntu.com/3781-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.