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Fencer Intel
critical 9.8

CVE-2019-8647 in the critical feed json

A use after free issue was addressed with improved memory management.

published 6y ago modified 4mo ago also EUVD-2019-18037

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
13.5%
EPSS 13.5% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.4, tvOS 12.4, watchOS 5.3. A remote attacker may be able to cause arbitrary code execution.

Patch / fix

  • Apple iOS iOS 12.4
  • Apple tvOS tvOS 12.4
  • Apple watchOS watchOS 5.3

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Timeline

  1. First public exploit (EDB-47192)
  2. Published

Exploit prediction

13.45% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-47192 iMessage - NSArray Deserialization can Invoke Subclass that does not Retain References dos, 2019-07-30

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Apple iOS
  • Apple tvOS
  • Apple watchOS

Classification

Weakness

References

Sources

Fencer Intel 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.