CVE-2018-4386
Multiple memory corruption issues were addressed with improved memory handling.
Does this matter?
2 public exploits are published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 6.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, tvOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.
- 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
- 6.49% probability · 94th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 29 November 2018
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apple/safari · apple/iphone os · apple/tvos · apple/watchos · apple/icloud · apple/itunes
- Source
- product-security@apple.com
EPSS 6.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (2)
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.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-47893source ↗ | Sony Playstation 4 (PS4) < 6.72 - WebKit Code Execution (PoC)hardware · TJ Corley | webapps | 31 December 2019 | no |
| EDB-45912source ↗ | WebKit JSC - BytecodeGenerator::hoistSloppyModeFunctionIfNecessary Does not Invalidate the 'ForInContext' Objectmultiple · Google Security Research | dos | 29 November 2018 | yes |
References
- http://packetstormsecurity.com/files/155871/Sony-Playstation-4-Webkit-Code-Execution.html
- https://support.apple.com/kb/HT209192Vendor Advisory
- https://support.apple.com/kb/HT209194Vendor Advisory
- https://support.apple.com/kb/HT209195Vendor Advisory
- https://support.apple.com/kb/HT209196Vendor Advisory
- https://support.apple.com/kb/HT209197Vendor Advisory
- https://support.apple.com/kb/HT209198Vendor Advisory
- http://packetstormsecurity.com/files/155871/Sony-Playstation-4-Webkit-Code-Execution.html
- https://support.apple.com/kb/HT209192Vendor Advisory
- https://support.apple.com/kb/HT209194Vendor Advisory
- https://support.apple.com/kb/HT209195Vendor Advisory
- https://support.apple.com/kb/HT209196Vendor Advisory
- https://support.apple.com/kb/HT209197Vendor Advisory
- https://support.apple.com/kb/HT209198Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.