CVE-2018-4155
A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.11%). 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 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "CoreFoundation" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.
- CVSS 3.0
- 7.0 HIGHCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.11% probability · 66th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- apple/iphone os · apple/mac os x · apple/tvos · apple/watchos
- Source
- product-security@apple.com
EPSS moved from 2.4% on 21 September 2026 to 1.1% on 27 October 2026.
References
- http://www.securitytracker.com/id/1040604Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040608Third Party Advisory, VDB Entry
- https://support.apple.com/HT208692Vendor Advisory
- https://support.apple.com/HT208693Vendor Advisory
- https://support.apple.com/HT208696Vendor Advisory
- https://support.apple.com/HT208698Vendor Advisory
- http://www.securitytracker.com/id/1040604Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040608Third Party Advisory, VDB Entry
- https://support.apple.com/HT208692Vendor Advisory
- https://support.apple.com/HT208693Vendor Advisory
- https://support.apple.com/HT208696Vendor Advisory
- https://support.apple.com/HT208698Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.