CVE-2018-10403

Name: CVE-2018-10403
Creator: NVD / NIST
Published: 2018-06-13T22:29:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.84%

Last modified Jun 17, 2026

CVE-2018-10403 is a vulnerability of currently unknown severity. An issue was discovered in F-Secure XFENCE and Little Flocker. A maliciously crafted Universal/fat binary can evade third-party code signing checks. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.84%

53.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
F-Secure	Xfence	All versions

References

https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/Exploit, Third Party Advisory
https://www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing-checks/Exploit, Third Party Advisory

Timeline

Published: Jun 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-10403?

How severe is CVE-2018-10403?

Severity scoring for CVE-2018-10403 is pending analysis. The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-10403?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST