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CVE-2021-30869: Apple iOS, iPadOS, and macOS Type Confusion Vulnerability

criticalknown exploitedCVE-2021-30869
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Apple iOS, iPadOS, and macOS contain a type confusion vulnerability in the XNU which may allow a malicious application to execute code with kernel privileges.

CSIRTS triage

vendor: Appleproduct: iOS, iPadOS, and macOSOther
What
The vulnerability is a type confusion that may allow a malicious application to execute code with kernel privileges.
Who is affected
Users of Apple iOS, iPadOS, and macOS.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to the latest version of iOS, iPadOS, or macOS.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-30869

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-30869coverage & exploitation statusNVD · CVE.org

Recent advisories for Apple iOS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities