What is CVE-2018-6336?

CVE-2018-6336 is a high-severity vulnerability in Facebook Osquery, classified under CWE-254. CVSS score: 7.8/10. Published 2018-12-31.

How severe is CVE-2018-6336?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Facebook Osquery

CVE-2018-6336

An issue was discovered in osquery. 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. This issue affects osquery prior to v3.2.7

Published 2018-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.5th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Facebook Osquery — versions 3.2.7, unspecified
Linuxfoundation Osquery

Weakness classification (CWE)

References

www.okta.com/security-blog/2018/06/issues-around-third-party-apple-code-signing… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-6336?: CVE-2018-6336 is a high-severity vulnerability in Facebook Osquery, classified under CWE-254. CVSS score: 7.8/10. Published 2018-12-31.
How severe is CVE-2018-6336?: High severity. CVSS v3 base score is 7.8 out of 10.