Summary iPlain-English security verdict for OS X, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
OS X currently scores 20/100 — critical, with active exploitation. 3 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2018-15982. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for OS X each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
3 of its known vulnerabilities are linked to ransomware campaigns (CISA KEV).
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2018-15982 HIGH exploited ransomware Use-after-free EPSS 82% → see advisory CVE-2022-2294 HIGH exploited ransomware Out-of-bounds write EPSS 70% → fixed in 10.15.7 CVE-2016-1019 CRITICAL exploited ransomware EPSS 22% → see advisory CVE-2018-25032 HIGH Out-of-bounds write EPSS 52% → fixed in 10.15.7 CVE-2016-9841 CRITICAL EPSS 8% → fixed in 10.13.0Get alerted about OS X
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Frequently asked
Is OS X safe and patched?
OS X currently scores 20/100 — critical, with active exploitation. 3 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2018-15982. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about OS X now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Apple's official advisory. Some issues are under active exploitation, so treat this as urgent.
Why is OS X listed on IsItPatched?
OS X was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Apple's official advisory before you patch or upgrade.