How severe is CVE-2018-10405?

CVE-2018-10405 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-10405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-10405?

CVE-2018-10405 affects Google Santa. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-10405?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-10405 published?

CVE-2018-10405 was published on 2018-06-13 and last updated on 2026-06-17.

CVE-2018-10405

CVE-2018-10405 is a high-severity vulnerability in Google Santa with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Google Santa
Published: 2018-06-13
Last modified: 2026-06-17

Description

An issue was discovered in Google Santa and molcodesignchecker. 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.

Frequently asked questions

What is CVE-2018-10405?: An issue was discovered in Google Santa and molcodesignchecker. 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.
How severe is CVE-2018-10405?: CVE-2018-10405 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-10405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-10405?: CVE-2018-10405 affects Google Santa. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-10405?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-10405 published?: CVE-2018-10405 was published on 2018-06-13 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:google:santa:*:*:*:*:*:*:*:*

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