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