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Fencer Intel
medium 6.5

CVE-2021-1811 json

A logic issue was addressed with improved state management.

published 5y ago modified 4mo ago also EUVD-2021-7275

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

A logic issue was addressed with improved state management. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing a maliciously crafted font may result in the disclosure of process memory.

Patch / fix

  • Apple iOS and iPadOS 14.5
  • Apple iTunes for Windows 12.11
  • Apple iCloud for Windows 12.3
  • Apple tvOS 14.5
  • Apple watchOS 7.4
  • Apple macOS 11.3, 2021

Is CVE-2021-1811 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

1.67% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/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 and iPadOS
  • Apple iTunes for Windows
  • Apple iCloud for Windows
  • Apple tvOS
  • Apple watchOS
  • Apple macOS

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.