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Weekly Signal
Live intelligence Updated 20 Aug 2026 · 23:28 UTC

Apple · Iphone Os, Mac Os X, OS X +1 more

CVE-2014-4404

Apple OS X Heap-Based Buffer Overflow Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Apple Security patch HT6441

View response plan
CVSS7.8
EPSS49.0%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 49.0%; technical severity is CVSS 7.8.

Heap-based buffer overflow in IOHIDFamily in Apple iOS before 8 and Apple TV before 7 allows attackers to execute arbitrary code in a privileged context via an application that provides crafted key-mapping properties.

Who should care

  • Teams operating Iphone Os, Mac Os X, OS X +1 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Iphone Os, Mac Os X, OS X +1 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Apple Security patch HT6441
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Patch

Advisory

Required Action

Technical details

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-119
Affected versions
Apple Iphone Os (End Excluding 8.0); Apple Mac Os X (End Excluding 10.10.0 | Start Including 10.10.1, End Excluding 10.10.3); Apple OS X; Apple Tvos (End Excluding 7.0)
Fixed versions
Apple Iphone Os (Fixed from 8.0); Apple Mac Os X (Fixed from 10.10.0, 10.10.3); Apple Tvos (Fixed from 7.0)
Published
18 September 2014
Attack vector
Local
Privileges required
None
User interaction
Required

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 49.0%
  4. Signal calculated at 77

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.