# CVE-2022-26758: Apple macOS Monterey memory corruption in shared memory

Source: https://junglewise.ai/threats/cve-2022-26758-apple-macos-monterey-memory-corruption-in-shared-memory  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-10. Updated: 2026-06-10  
License: CC BY 4.0 with a link back

CVE-2022-26758 · Severity: info · Published 2026-06-10

A vulnerability in macOS Monterey could allow a malicious application installed on a computer to interfere with the memory used by other running programs. This could lead to system instability or allow the malicious app to gain unauthorized access to sensitive information handled by other processes. Apple has released a software update to correct how the system manages shared memory states.

Technologies: [Apple macOS Monterey](https://junglewise.ai/threats/technologies/macos-monterey). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2022-26758 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-26758 being exploited in the wild.

**How severe is CVE-2022-26758?** Informational severity, published 10 June 2026.

**Which products and versions are affected?** Apple macOS Monterey Before 12.4.

**Is there a fix for CVE-2022-26758?** A patch was published on 2022-05-16: Fixed in macOS Monterey 12.4 release Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2022-26758 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2022-26758?** Check whether you run Apple macOS Monterey 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 memory corruption vulnerability exists in macOS Monterey due to improper state management when handling memory shared between processes. A local attacker can exploit this by running a malicious application that manipulates shared memory regions, potentially leading to arbitrary code execution or unauthorized data access across process boundaries. The issue was resolved in macOS Monterey 12.4 by implementing more robust state management logic. While specific CVSS scores were not provided in the advisory, memory corruption in OS-level shared memory typically warrants a medium to high severity rating depending on the level of privilege escalation achieved.

## Affected products

- Apple macOS Monterey Before 12.4

## Timeline

- 2022-05-16: patched: Fixed in macOS Monterey 12.4 release
- 2026-06-10: advisory: NVD publication date

## References

- [https://support.apple.com/en-us/213257](https://support.apple.com/en-us/213257)

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