CVE-2018-4200
It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site that triggers a WebCore::jsElementScrollHeightGetter use-after-free.
Does this matter?
A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 8.7%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
An issue was discovered in certain Apple products. iOS before 11.3.1 is affected. Safari before 11.1 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 (memory corruption and application crash) via a crafted web site that triggers a WebCore::jsElementScrollHeightGetter use-after-free.
- 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
- 8.67% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 2 May 2018
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- apple/safari · apple/iphone os · apple/tvos · apple/icloud · apple/itunes · canonical/ubuntu linux
- Source
- product-security@apple.com
EPSS moved from 10.5% on 21 September 2026 to 8.7% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/103961Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040743Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1525Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/201808-04Third Party Advisory
- https://support.apple.com/HT208741Vendor Advisory
- https://support.apple.com/HT208743Vendor Advisory
- https://support.apple.com/HT208850Vendor Advisory
- https://support.apple.com/HT208852Vendor Advisory
- https://support.apple.com/HT208853Vendor Advisory
- https://usn.ubuntu.com/3640-1/Third Party Advisory
- https://www.exploit-db.com/exploits/44566/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/103961Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040743Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1525Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/201808-04Third Party Advisory
- https://support.apple.com/HT208741Vendor Advisory
- https://support.apple.com/HT208743Vendor Advisory
- https://support.apple.com/HT208850Vendor Advisory
- https://support.apple.com/HT208852Vendor Advisory
- https://support.apple.com/HT208853Vendor Advisory
- https://usn.ubuntu.com/3640-1/Third Party Advisory
- https://www.exploit-db.com/exploits/44566/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.