CVE-2018-4124
9.8
CRITICAL · CVSS 3.0 · EPSS 5.9% (pctl 93)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
An issue was discovered in certain Apple products. iOS before 11.2.6 is affected. macOS before 10.13.3 Supplemental Update is affected. tvOS before 11.2.6 is affected. watchOS before 4.2.3 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a crafted string containing a certain Telugu character.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 5.86% — more likely to be exploited than 93% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-04-03 |
| Last modified | 2026-06-17 |
Affected (4)
| Vendor | Product |
|---|---|
| apple | iphone os |
| apple | mac os x |
| apple | tvos |
| apple | watchos |
References
- http://www.securitytracker.com/id/1040396
- https://nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-crash-your-mac-and-iphone-bug/
- https://support.apple.com/HT208534
- https://support.apple.com/HT208535
- https://support.apple.com/HT208536
- https://support.apple.com/HT208537
- http://www.securitytracker.com/id/1040396
- https://nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-crash-your-mac-and-iphone-bug/
- https://support.apple.com/HT208534
- https://support.apple.com/HT208535
- https://support.apple.com/HT208536
- https://support.apple.com/HT208537
→ the Explorer · watch your stack · NVD