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Weekly Signal
Live intelligence Updated 21 Aug 2026 · 22:11 UTC

Apple · Ipados, Iphone Os, macOS +2 more

CVE-2023-32434

Apple Multiple Products Integer Overflow Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Apple Security patch HT213990

View response plan
CVSS7.8
EPSS51.5%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 51.5%; technical severity is CVSS 7.8.

An integer overflow was addressed with improved input validation. This issue is fixed in watchOS 9.5.2, macOS Big Sur 11.7.8, iOS 15.7.7 and iPadOS 15.7.7, macOS Monterey 12.6.7, watchOS 8.8.1, iOS 16.5.1 and iPadOS 16.5.1, macOS Ventura 13.4.1. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

Who should care

  • Teams operating Ipados, Iphone Os, macOS +2 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Ipados, Iphone Os, macOS +2 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Apple Security patch HT213990
  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-190
Affected versions
Apple Ipados (End Excluding 15.7.7 | Start Including 16.0, End Excluding 16.5.1); Apple Iphone Os (End Excluding 15.7.7 | Start Including 16.0, End Excluding 16.5.1); Apple macOS (Start Including 11.0, End Excluding 11.7.8 | Start Including 12.0.0, End Excluding 12.6.7 | Start Including 13.0, End Excluding 13.4.1); Apple Multiple Products; Apple Watchos (End Excluding 8.8.1 | Start Including 9.0, End Excluding 9.5.2)
Fixed versions
Apple Ipados (Fixed from 15.7.7, 16.5.1); Apple Iphone Os (Fixed from 15.7.7, 16.5.1); Apple macOS (Fixed from 11.7.8, 12.6.7, 13.4.1); Apple Watchos (Fixed from 8.8.1, 9.5.2)
Published
23 June 2023
Attack vector
Local
Privileges required
None
User interaction
Required

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 51.5%
  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.