CVE-2021-30883
Apple Multiple Products Memory Corruption Vulnerability
CVSS
7.8HighExploit odds (EPSS)14.7%Chance of exploitation activity in the next 30 days, higher than 96% of CVEs. Scored 23 Oct 2026FIRST EPSS
CISA required actionApply updates per vendor instructions. CISA KEV
What fixes it
- 15.0iOS and iPadOSCVE List
- 14.8iOS and iPadOSCVE List
- 12.0macOSCVE List
- 11.6macOSCVE List
- 8.1macOSCVE List
- 15.1macOSCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Timeline
Description
Apple iOS, macOS, watchOS, and tvOS contain a memory corruption vulnerability that could allow for remote code execution.
Text from CVE List
Affected versions 6
- iOS and iPadOSaffected: unspecified before 15.0CVE List
- iOS and iPadOSaffected: unspecified before 14.8CVE List
- macOSaffected: unspecified before 12.0CVE List
- macOSaffected: unspecified before 11.6CVE List
- macOSaffected: unspecified before 8.1CVE List
- macOSaffected: unspecified before 15.1CVE List
References 8
- nvd.nist.gov/vuln/detail/CVE-2021-30883Referencevia CISA KEV
- support.apple.com/en-us/HT212869Referencevia CVE List
- support.apple.com/en-us/HT212872Referencevia CVE List
- support.apple.com/en-us/HT212846Referencevia CVE List
- support.apple.com/en-us/HT212868Referencevia CVE List
- support.apple.com/en-us/HT212874Referencevia CVE List
- support.apple.com/en-us/HT212876Referencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30883Referencevia CVE List