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Fencer Vulns
medium 5.5

CVE-2019-6209 json

An out-of-bounds read issue existed that led to the disclosure of kernel memory.

published 2019-03-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15776

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
1
Exploit-DB

Summary

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in iOS 12.1.3, macOS Mojave 10.14.3, tvOS 12.1.2, watchOS 5.1.3. A malicious application may be able to determine kernel memory layout.

Patch / fix

  • Apple iOS iOS 12.1.3
  • Apple macOS macOS Mojave 10.14.3
  • Apple tvOS tvOS 12.1.2
  • Apple watchOS watchOS 5.1.3

Timeline

  1. First public exploit (EDB-46285)
  2. Published

Exploit prediction

3.69% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-46285 iOS/macOS 10.13.6 - 'if_ports_used_update_wakeuuid()' 16-byte Uninitialized Kernel Stack Disclosure dos, 2019-01-30

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • Apple iOS
  • Apple macOS
  • Apple tvOS
  • Apple watchOS

Classification

Weakness

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.