CVE-2021-30883A memory corruption issue was addressed with improved memory handling.
Updated under an hour ago ()
Does this affect you?
It affects Apple iOS and iPadOS and 5 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since May 23, 2022; federal agencies had to remediate by Jun 13, 2022. Treat that date as your deadline.
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A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Added to CISA KEV May 23, 2022; federal remediation due Jun 13, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 14.72% (percentile 97)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apple iOS and iPadOS apple:ios_and_ipados (from the name) | from unspecified before 15.0 | CNA record |
Apple macOS apple:macos (from the name) | from unspecified before 12.0 | CNA record |
apple ipados apple:ipados | before 14.8.1; from 15.0 before 15.0.2 | NVD |
apple iphone_os apple:iphone_os | before 14.8.1; from 15.0 before 15.0.2 | NVD |
apple macos apple:macos | from 11.0 before 11.6.1; 12.0 | NVD |
apple tvos apple:tvos | before 15.1 | NVD |
apple watchos apple:watchos | before 8.1 | NVD |
References
- https://support.apple.com/en-us/HT212869x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212872x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212846x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212868x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212874x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212876x-refsource-misc, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30883us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.