CVE-2018-4247
It allows remote attackers to cause a denial of service (persistent Safari outage) via a crafted web site.
Does this matter?
Lower severity and a low EPSS score (1.43%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. The issue involves the "Safari" component. It allows remote attackers to cause a denial of service (persistent Safari outage) via a crafted web site.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.43% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- apple/safari · apple/iphone os
- Source
- product-security@apple.com
EPSS 1.4% 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
- http://www.securityfocus.com/bid/104366Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041029Third Party Advisory, VDB Entry
- https://support.apple.com/HT208848Vendor Advisory
- https://support.apple.com/HT208854Vendor Advisory
- https://twitter.com/Nate_Kappa/status/1004399403220766725Third Party Advisory
- http://www.securityfocus.com/bid/104366Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041029Third Party Advisory, VDB Entry
- https://support.apple.com/HT208848Vendor Advisory
- https://support.apple.com/HT208854Vendor Advisory
- https://twitter.com/Nate_Kappa/status/1004399403220766725Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.