# CVE-2025-43236: Apple macOS type confusion memory handling issue

Source: https://junglewise.ai/threats/cve-2025-43236-apple-macos-type-confusion-memory-handling-issue  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-02. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2025-43236 · Severity: low · CVSS 3.3 · Published 2026-04-02

A memory handling issue in macOS could allow an attacker to cause applications to crash unexpectedly. This affects users running older versions of macOS Sequoia, Sonoma, and Ventura. While the risk to data privacy is low, it can disrupt normal operations by causing software instability.

Technologies: [Apple macOS Sequoia](https://junglewise.ai/threats/technologies/macos), [Apple macOS Ventura](https://junglewise.ai/threats/technologies/macos-ventura). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2025-43236 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-43236 being exploited in the wild.

**How severe is CVE-2025-43236?** Low severity, with a CVSS score of 3.3, published 2 April 2026.

**Which products and versions are affected?** Apple macOS Sequoia before 15.6; Apple macOS Sonoma before 14.7.7; Apple macOS Ventura before 13.7.7.

**Is there a fix for CVE-2025-43236?** A patch was published on 2026-04-02. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-43236 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2025-43236?** Check whether you run Apple macOS Sequoia, Apple macOS Sonoma or Apple macOS Ventura at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A type confusion vulnerability (CWE-843) exists in macOS due to improper memory handling when processing certain resources. An attacker can exploit this flaw to cause a denial-of-service condition via unexpected application termination. The attack requires local access and typically involves some level of user interaction. Apple has addressed this issue by improving memory handling logic in macOS Sequoia 15.6, macOS Sonoma 14.7.7, and macOS Ventura 13.7.7.

## Affected products

- Apple macOS Sequoia before 15.6
- Apple macOS Sonoma before 14.7.7
- Apple macOS Ventura before 13.7.7

## Timeline

- 2026-04-02: disclosed
- 2026-04-02: advisory
- 2026-04-02: patched

## References

- [https://support.apple.com/en-us/124149](https://support.apple.com/en-us/124149)
- [https://support.apple.com/en-us/124150](https://support.apple.com/en-us/124150)
- [https://support.apple.com/en-us/124151](https://support.apple.com/en-us/124151)

## Related threats

- [Apple iOS and iPadOS Bluetooth pairing rate limit bypass in CoreUtils](https://junglewise.ai/threats/cve-2026-113964-a-logic-issue-was-addressed-with-improved-state-management-this)
- [Apple Messages authorization bypass in iMessage group chat](https://junglewise.ai/threats/cve-2026-113961-an-authorization-issue-was-addressed-with-improved-validation)
- [Apple Messages message history disclosure in group chats](https://junglewise.ai/threats/cve-2026-113960-this-issue-was-addressed-by-removing-the-vulnerable-code-this)
- [Apple AppleAVD out-of-bounds write in video processing](https://junglewise.ai/threats/cve-2026-86992-the-issue-was-addressed-with-improved-memory-handling-this-issue)
- [Apple macOS file access issue in home folder files](https://junglewise.ai/threats/cve-2026-86984-a-file-access-issue-existed-with-certain-home-folder-files-this)