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Fencer Vulns
high 7.8

CVE-2018-4435 json

A logic issue was addressed with improved restrictions.

published 2019-04-03 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16221

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
1
Exploit-DB

Summary

A logic issue was addressed with improved restrictions. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.

Patch / fix

  • apple iphone_os 12.1.1
  • apple mac_os_x 10.14.2
  • apple tvos 12.1.1
  • apple watchos 5.1.2

Timeline

  1. First public exploit (EDB-45960)
  2. Published

Exploit prediction

3.09% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-45960 XNU - POSIX Shared Memory Mappings have Incorrect Maximum Protection local, 2018-12-11

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a iOS, macOS, tvOS, watchOS

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

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.