# CVE-2026-43790: Apple macOS kernel memory corruption

Source: https://junglewise.ai/threats/cve-2026-43790-apple-macos-kernel-memory-corruption  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-14. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-43790 · Severity: critical · CVSS 9.1 · Published 2026-09-14

A memory handling flaw in macOS could allow a remote attacker to crash the system or corrupt kernel memory, leading to potential system instability or data loss. This affects multiple versions of Apple's operating system across Intel and Apple silicon Macs. The vulnerability requires no user interaction and is accessed over the network.

Technologies: [Apple macOS Golden Gate](https://junglewise.ai/threats/technologies/macos-golden-gate), [Apple macOS Sequoia](https://junglewise.ai/threats/technologies/macos). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2026-43790 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43790 being exploited in the wild.

**How severe is CVE-2026-43790?** Critical severity, with a CVSS score of 9.1, published 14 September 2026.

**Which products and versions are affected?** Apple macOS Golden Gate 27; Apple macOS Sequoia 15.8; Apple macOS Tahoe 26.7.

**Is there a fix for CVE-2026-43790?** A patch was published on 2026-09-14: Fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-43790 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-43790?** Check whether you run Apple macOS Golden Gate, Apple macOS Sequoia or Apple macOS Tahoe 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

CVE-2026-43790 is an out-of-bounds write or memory corruption vulnerability in the macOS kernel or a core system component. The vulnerability allows a remote attacker to trigger unexpected kernel termination or corrupt kernel memory through a maliciously crafted input or request. The fix involves improved memory handling and bounds checking. The vulnerability affects macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7, which were released on September 14, 2026.

## Affected products

- Apple macOS Golden Gate 27
- Apple macOS Sequoia 15.8
- Apple macOS Tahoe 26.7

## Timeline

- 2026-09-14: patched: Fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7
- 2026-09-14: disclosed

## References

- [https://support.apple.com/en-us/149035](https://support.apple.com/en-us/149035)
- [https://support.apple.com/en-us/149042](https://support.apple.com/en-us/149042)

## 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 CoreMedia access issue in camera permission bypass](https://junglewise.ai/threats/cve-2026-86990-an-access-issue-was-addressed-with-improved-access-restrictions)