CVE-2018-4248 json
An out-of-bounds read was addressed with improved input validation.
published 2019-04-03 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16034
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
An out-of-bounds read was addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, macOS High Sierra 10.13.6, tvOS 11.4.1, watchOS 4.3.2.
Patch / fix
- apple iphone_os 11.4.1
- apple mac_os_x 10.13.6
- apple tvos 11.4.1
- apple watchos 4.3.2
Exploit prediction
2.40% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- n/a iOS, macOS, tvOS, watchOS
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
support.apple.com
/kb/HT208937
vendor-advisory
-
support.apple.com
/kb/HT208938
vendor-advisory
-
support.apple.com
/kb/HT208935
vendor-advisory
-
support.apple.com
/kb/HT208936
vendor-advisory
Sources
- CVE List CVE-2018-4248
- NVD CVE-2018-4248
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.