What’s Vulnerable › Vulnerabilities
CVE-2019-8642
- Severity: low (CVSS 3.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-10-27 · updated 2026-06-17
- Weakness: CWE-295
Description
An issue existed in the handling of S-MIME certificates. This issue was addressed with improved validation of S-MIME certificates. This issue is fixed in macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra. Processing a maliciously crafted mail message may lead to S/MIME signature spoofing.
Affected products
- macOS: before 10.14.4 — fixed in 10.14.4
How to fix
Upgrade to a fixed version: macOS 10.14.4. Check the vendor advisory for mitigations.
References
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