CVE-2021-30900An out-of-bounds write issue was addressed with improved bounds checking.
Updated under an hour ago ()
Does this affect you?
It affects Apple iOS and iPadOS and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 30, 2023; federal agencies had to remediate by Apr 20, 2023. Treat that date as your deadline.
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Free account, 1 product
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.
- 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 Mar 30, 2023; federal remediation due Apr 20, 2023Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 5.20% (percentile 92)
- 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 15.1 | CNA record |
apple ipados apple:ipados | before 14.8.1; 15.0 | NVD |
apple iphone_os apple:iphone_os | before 14.8.1; 15.0 | NVD |
apple macos apple:macos | before 11.6.1 | NVD |
References
- https://support.apple.com/kb/HT212872x-refsource-confirm, vendor-advisory
- https://support.apple.com/en-us/HT212867x-refsource-misc, vendor-advisory
- https://support.apple.com/en-us/HT212868x-refsource-misc, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900us-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.