VulnTideExploited vulnerabilities, by vendor. Data as of 28 Oct 2026.
Known exploitedIn CISA's KEV catalog since 23 June 2023Ransomware use: unknown
Apple Multiple Products

CVE-2023-32434: Apple Multiple Products Integer Overflow Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 23 Jun 2023, the same day the CVE record was published.

How likely is exploitation in the next 30 days?
51.5%

EPSS score, percentile 98.9 of all scored records

How severe?
7.8 High

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA deadline 14 Jul 2023. Apply updates per vendor instructions.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

  • before 12.6
  • before 15.7
  • before 16.5
  • before 8.8
  • before 9.5
  • before 13.4

and 1 more in the table below

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply updates per vendor instructions.

CISA due date for this action: 14 July 2023.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

Linked from CISA's catalog entry

Affected products and versions

As listed in the CVE record.

Apple macOS
StatusVersions
Affectedbefore 12.6
Apple iOS and iPadOS
StatusVersions
Affectedbefore 15.7
Apple iOS and iPadOS
StatusVersions
Affectedbefore 16.5
Apple watchOS
StatusVersions
Affectedbefore 8.8
Apple watchOS
StatusVersions
Affectedbefore 9.5
Apple macOS
StatusVersions
Affectedbefore 13.4
Apple macOS
StatusVersions
Affectedbefore 11.7

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

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

Summary: CISA's KEV catalog, as of 28 Oct 2026.

  • CISA added CVE-2023-32434 to its Known Exploited Vulnerabilities (KEV) catalog on 23 Jun 2023.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 14 Jul 2023.
  • The CVE record was published on 23 Jun 2023, the same day it was added to KEV.
  • The CVE record carries a CVSS v3.1 base score of 7.8 (High), taken from CISA's enrichment of the record.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 51.5% (percentile 98.9), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

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.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

  • CWE-190: Integer Overflow or Wraparound

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

DateEvent
23 Jun 2023CVE record published
23 Jun 2023Added to CISA KEV
14 Jul 2023CISA due date for the required action
21 Oct 2025CVE record last updated

References

More exploited Apple vulnerabilities

  • CVE-2026-86950: Apple Multiple Products Out-of-Bounds Write Vulnerability (added 29 Sep 2026)
  • CVE-2026-65400: Apple macOS Improper Authentication Vulnerability (added 18 Aug 2026)
  • CVE-2025-31277: Apple Multiple Products Buffer Overflow Vulnerability (added 20 Mar 2026)
  • CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability (added 20 Mar 2026)
  • CVE-2025-43520: Apple Multiple Products Classic Buffer Overflow Vulnerability (added 20 Mar 2026)
  • CVE-2021-30952: Apple Multiple Products Integer Overflow or Wraparound Vulnerability (added 5 Mar 2026)