CVE-2018-4090
It allows attackers to bypass intended memory-read restrictions via a crafted app.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 3.6%. Treat it as high on anything reachable from the internet.
Description
An issue was discovered in certain Apple products. iOS before 11.2.5 is affected. macOS before 10.13.3 is affected. tvOS before 11.2.5 is affected. watchOS before 4.2.2 is affected. The issue involves the "Kernel" component. It allows attackers to bypass intended memory-read restrictions via a crafted app.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS
- 3.62% probability · 89th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 29 January 2018
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- apple/apple tv · apple/iphone os · apple/mac os x · apple/watchos
- Source
- product-security@apple.com
EPSS moved from 5.9% on 21 September 2026 to 3.6% 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/102782Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040265Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040267Third Party Advisory, VDB Entry
- https://support.apple.com/HT208462Vendor Advisory
- https://support.apple.com/HT208463Vendor Advisory
- https://support.apple.com/HT208464Vendor Advisory
- https://support.apple.com/HT208465Vendor Advisory
- https://www.exploit-db.com/exploits/43923/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/102782Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040265Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040267Third Party Advisory, VDB Entry
- https://support.apple.com/HT208462Vendor Advisory
- https://support.apple.com/HT208463Vendor Advisory
- https://support.apple.com/HT208464Vendor Advisory
- https://support.apple.com/HT208465Vendor Advisory
- https://www.exploit-db.com/exploits/43923/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.