High 7.8Known exploited (CISA KEV)Published Jun 22, 2023

CVE-2023-32434An integer overflow was addressed with improved input validation.

Updated under an hour ago (Oct 26, 2026, 8:50 PM ET)

Does this affect you?

It affects Apple macOS and 4 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jun 23, 2023; federal agencies had to remediate by Jul 14, 2023. Treat that date as your deadline.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Apple macOS

Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-190
Known exploited: Added to CISA KEV Jun 23, 2023; federal remediation due Jul 14, 2023Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 51.52% (percentile 99)
Assigned by: apple
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apple macOS apple:macos (from the name)	from unspecified before 12.6	CNA record
Apple iOS and iPadOS apple:ios_and_ipados (from the name)	from unspecified before 15.7	CNA record
Apple watchOS apple:watchos (from the name)	from unspecified before 8.8	CNA record
apple ipados apple:ipados	before 15.7.7; from 16.0 before 16.5.1	NVD
apple iphone_os apple:iphone_os	before 15.7.7; from 16.0 before 16.5.1	NVD
apple macos apple:macos	from 11.0 before 11.7.8; from 12.0.0 before 12.6.7; from 13.0 before 13.4.1	NVD
apple watchos apple:watchos	before 8.8.1; from 9.0 before 9.5.2	NVD

References

References

https://support.apple.com/en-us/HT213810	vendor-advisory
https://support.apple.com/en-us/HT213811	vendor-advisory
https://support.apple.com/en-us/HT213814	vendor-advisory
https://support.apple.com/en-us/HT213808	vendor-advisory
https://support.apple.com/en-us/HT213812	vendor-advisory
https://support.apple.com/en-us/HT213813	vendor-advisory
https://support.apple.com/en-us/HT213809	vendor-advisory
https://support.apple.com/kb/HT213990	vendor-advisory
http://seclists.org/fulldisclosure/2023/Oct/20	mailing-list, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32434	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.