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CVE-2023-32434

Apple Multiple Products Integer Overflow

7.8 HIGHActively exploited (CISA KEV)EPSS 51.5%
  1. Published23 Jun 2023
  2. Added to CISA KEV23 Jun 2023
  3. Remediation due14 Jul 2023
Actively exploited (CISA KEV)

Apple iOS. iPadOS, macOS, and watchOS contain an integer overflow vulnerability that could allow an application to execute code with kernel privileges.

Added to KEV: 23 Jun 2023Federal remediation due: 14 Jul 2023

Description

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple iPadOS≥ 16.0 < 16.5.1 · < 15.7.7
Apple iPhone OS≥ 16.0 < 16.5.1 · < 15.7.7
Apple macOS≥ 11.0 < 11.7.8 · ≥ 12.0.0 < 12.6.7 · ≥ 13.0 < 13.4.1
Apple Watchos≥ 9.0 < 9.5.2 · < 8.8.1

Remediation

Fixed in
Apple iPadOS≥ 16.5.1
Apple iPhone OS≥ 16.5.1
Apple macOS≥ 11.7.8
Apple Watchos≥ 9.5.2

References

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Frequently asked

Is CVE-2023-32434 being actively exploited?

Yes. CVE-2023-32434 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 23 Jun 2023.

How severe is CVE-2023-32434?

CVE-2023-32434 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 51.5% probability of exploitation.

Which products are affected by CVE-2023-32434?

Affected products include Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Watchos.

How do I fix CVE-2023-32434?

Upgrade affected software to a fixed version, for example Apple iPadOS 16.5.1, Apple iPhone OS 16.5.1, Apple macOS 11.7.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-32434 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.