Apple · Multiple Products
CVE-2023-32434
Apple Multiple Products Integer Overflow Vulnerability
What it is
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.
CISA: Apple iOS. iPadOS, macOS, and watchOS contain an integer overflow vulnerability that could allow an application to execute code with kernel privileges.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: July 14, 2023
- Added to the CISA list
- June 23, 2023
- Published
- June 23, 2023
- Severity
- High 7.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 52% in the top 1.1% of all known vulnerabilities
- Weakness
- CWE-190
- More details
- NVD · CVE.org · CISA
All references (9)
- https://support.apple.com/en-us/HT213810
- https://support.apple.com/en-us/HT213811
- https://support.apple.com/en-us/HT213814
- https://support.apple.com/en-us/HT213808
- https://support.apple.com/en-us/HT213812
- https://support.apple.com/en-us/HT213813
- https://support.apple.com/en-us/HT213809
- https://support.apple.com/kb/HT213990
- http://seclists.org/fulldisclosure/2023/Oct/20
More exploited flaws from Apple
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Sep 29, 2026 | Out-of-Bounds Write | Multiple Products | High 8.8 | 26% |
| Mar 20, 2026 | Buffer Overflow | Multiple Products | High 8.8 | 1.7% |
| Mar 20, 2026 | Improper Locking | Multiple Products | High 7.8 | 0.4% |
| Mar 20, 2026 | Classic Buffer Overflow | Multiple Products | Medium 5.5 | 0.4% |
| Mar 5, 2026 | Integer Overflow or Wraparound | Multiple Products | High 8.8 | 7.0% |
| Mar 5, 2026 | Use-After-Free | Multiple Products | High 8.8 | 4.0% |
| Feb 12, 2026 | Multiple Buffer Overflow | Multiple Products | High 7.8 | 1.7% |
| Dec 15, 2025 | Use-After-Free WebKit | Multiple Products | High 8.8 | 26% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.