CVE-2018-10403: F-Secure Xfence

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in F-Secure XFENCE and Little Flocker. A maliciously crafted Universal/fat binary can evade third-party code signing checks. By not completing full inspection of the Universal/fat binary, the user of the third-party tool will believe that the code is signed by Apple, but the malicious unsigned code will execute.

Affected products

• F-Secure Xfence: affected versions not specified

Published 2018-06-13. Last modified 2026-06-17.