VulnerabilityModified
CVE-2018-4271
Multiple memory corruption issues were addressed with improved input validation.
MEDIUM 6.5EPSS 1.61%
Does this matter?
Lower severity and a low EPSS score (1.61%). Track it; it rarely justifies an emergency change on its own.
Description
Multiple memory corruption issues were addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.61% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apple/safari · apple/iphone os · apple/tvos · apple/watchos · apple/icloud · apple/itunes
- Source
- product-security@apple.com
EPSS 1.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://support.apple.com/kb/HT208932Vendor Advisory
- https://support.apple.com/kb/HT208933Vendor Advisory
- https://support.apple.com/kb/HT208934Vendor Advisory
- https://support.apple.com/kb/HT208935Vendor Advisory
- https://support.apple.com/kb/HT208936Vendor Advisory
- https://support.apple.com/kb/HT208938Vendor Advisory
- https://support.apple.com/kb/HT208932Vendor Advisory
- https://support.apple.com/kb/HT208933Vendor Advisory
- https://support.apple.com/kb/HT208934Vendor Advisory
- https://support.apple.com/kb/HT208935Vendor Advisory
- https://support.apple.com/kb/HT208936Vendor Advisory
- https://support.apple.com/kb/HT208938Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.