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Fencer Intel
critical 9.8

CVE-2019-8641 in the critical feed json

An out-of-bounds read was addressed with improved input validation.

published 6y ago modified 4mo ago also EUVD-2019-18031

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
17.1%
EPSS 17.1% chance of exploitation in 30 days, percentile 97%
public exploits
2
Exploit-DB

Summary

An out-of-bounds read was addressed with improved input validation.

Patch / fix

  • Apple iOS iOS 12.4.2, iOS 13
  • Apple watchOS watchOS 5.3.2, watchOS 6
  • Apple macOS macOS Mojave 10.14.6 Supplemental Update 2

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Timeline

  1. First public exploit (EDB-47415)
  2. Published

Exploit prediction

17.13% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-47608 iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address dos, 2019-11-11
  • EDB-47415 iMessage - Decoding NSSharedKeyDictionary Can Read Object Out of Bounds dos, 2019-09-24

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 watchOS
  • Apple macOS

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.