CVE-2023-32434
HighExploitedPublic exploitAn integer overflow was addressed with improved input validation.
Published Dec 28, 2023 · Updated Oct 21, 2025 · Also known as TR-23-0739
Key Facts
Patch immediately- CVE-2023-32434 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Ipados (Apple), Iphone OS (Apple), macOS (Apple) and 2 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 21, 2023. Public exploit code is available.
- EPSS estimates a 52% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 15.7.7, Iphone OS 15.7.7, macOS 11.7.8.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
52%
Higher than 98.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-32434 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 23, 2023 | Jul 14, 2023 | Not reported |
| Industry KEV feed | Jun 21, 2023 | Jul 14, 2023 | Not reported |
| CIRCL KEV | Jun 23, 2023 | Jul 14, 2023 | Not reported |
| ENISA EUVD | Jun 23, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
7 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| IpadosApple | See advisory | 15.7.7 |
| Iphone OSApple | See advisory | 15.7.7 |
| macOSApple | >= unspecified | 11.7.8 |
| watchOSApple | >= unspecified | 8.8.1 |
| iOS and iPadOS | >= unspecified | 15.7 |
Patched Releases
Ipados
15.7.7
Iphone OS
15.7.7
macOS
11.7.8, 11.7, 12.6, 13.4
watchOS
8.8.1, 8.8, 9.5
iOS and iPadOS
15.7, 16.5
Timeline
Added to Industry KEV feed
Jun 21, 2023
Added to CISA KEV
Jun 23, 2023
Added to CIRCL KEV
Jun 23, 2023
Added to ENISA EUVD
Jun 23, 2023
Publicly disclosed
Dec 28, 2023
Last updated
Oct 21, 2025
Weakness Type
- CWE-190 Integer Overflow or Wraparound
References
- advisoryhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-37450
- advisoryhttp://seclists.org/fulldisclosure/2023/Oct/20
- advisoryhttps://isc.sans.edu/diary/rss/29972
- advisoryhttps://nakedsecurity.sophos.com/2023/06/22/apple-patch-fixes-zero-day-kernel-hole-reported-by-kaspersky-update-now/
- advisoryhttps://securelist.com/operation-triangulation-the-last-hardware-mystery/111669/
FAQ
Common Questions.
An integer overflow was addressed with improved input validation.
Affected: Ipados (Apple); Iphone OS (Apple); macOS (Apple) versions >= unspecified, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 21, 2023.
Yes. It was added on Jun 23, 2023 with a federal remediation due date of Jul 14, 2023.
Public exploit code is available.
Fixed versions are available, including Ipados 15.7.7, Iphone OS 15.7.7, macOS 11.7.8.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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