CVE-2018-4366
A memory corruption issue was addressed with improved input validation.
Does this matter?
A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 6.4%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
A memory corruption issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 6.45% probability · 94th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 6 November 2018
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apple/iphone os
- Source
- product-security@apple.com
EPSS moved from 5.3% on 21 September 2026 to 6.4% 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
- https://support.apple.com/kb/HT209192Vendor Advisory
- https://support.apple.com/kb/HT209192Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.