CVE-2026-43755 is a race condition vulnerability in Apple macOS that may allow an application to escalate privileges to root. The underlying issue was due to improper state management, which has been corrected in the updates macOS Sonoma 14.8.8 and macOS Tahoe 26.6. The vulnerability is classified under CWE-362 (Race Condition). The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. There is no vendor advisory explicitly stating the remediation level, but the description confirms the issue is fixed in the specified versions.

If exploited, this vulnerability could allow a local attacker with limited privileges to gain root-level access on affected macOS systems, potentially compromising system confidentiality, integrity, and availability. No known exploits are currently reported in the wild.

Apply the official fixes by updating macOS to Sonoma 14.8.8 or Tahoe 26.6, where this vulnerability has been addressed with improved state management. Since the vendor advisory confirms the fix in these versions, upgrading to these or later versions is the recommended mitigation. Patch status is confirmed by the vendor's description.