CVE-2018-4199
It allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) via a crafted web site.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) via a crafted web site.
- 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
- 4.36% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apple/safari · apple/iphone os · apple/tvos · apple/icloud · apple/itunes · canonical/ubuntu linux
- Source
- product-security@apple.com
EPSS moved from 4.4% on 18 October 2026 to 4.4% on 27 October 2026.
References
- http://www.securitytracker.com/id/1041029Third Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/201808-04Third Party Advisory
- https://support.apple.com/HT208848Vendor Advisory
- https://support.apple.com/HT208850Vendor Advisory
- https://support.apple.com/HT208852Vendor Advisory
- https://support.apple.com/HT208853Vendor Advisory
- https://support.apple.com/HT208854Vendor Advisory
- https://usn.ubuntu.com/3687-1/Third Party Advisory
- http://www.securitytracker.com/id/1041029Third Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/201808-04Third Party Advisory
- https://support.apple.com/HT208848Vendor Advisory
- https://support.apple.com/HT208850Vendor Advisory
- https://support.apple.com/HT208852Vendor Advisory
- https://support.apple.com/HT208853Vendor Advisory
- https://support.apple.com/HT208854Vendor Advisory
- https://usn.ubuntu.com/3687-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.