CVE-2018-4398
An issue existed in the method for determining prime numbers. This issue was addressed by using pseudorandom bases for testing of primes.…
- 7.5HighCVSS base score
- 1.6%Exploitation in 30 daysEPSS · top 24% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An issue existed in the method for determining prime numbers. This issue was addressed by using pseudorandom bases for testing of primes. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1, iTunes 12.9.1, iCloud for Windows 7.8.
Timeline
ID reserved
By apple
- 15 months later
· 15 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
iOS, macOS, tvOS, watchOS, iTunes for Windows, iCloud for Windows
- affected Versions prior to: iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1, iTunes 12.9.1, iCloud for Windows 7.8
References
6
- https://support.apple.com/kb/HT209193 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT209192 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT209195 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT209194 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT209197 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT209198 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-16184 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-4398)Record last updated .