CVEs / CVE-2021-30900
CVE-2021-30900: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
- Known exploited in the CISA KEV catalog since 30 Mar 2023
- high 7.8 CVSS 3.1 (NVD)
- EPSS 5.2% chance of exploitation in the next 30 days, higher than 92% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Apple GPU drivers, included in iOS, iPadOS, and macOS, contain an out-of-bounds write vulnerability that may allow a malicious application to execute code with kernel privileges.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apple iOS and iPadOS | from unspecified, before 15.1 | 15.1 |
| Apple iOS and iPadOS | from unspecified, before 14.8 | 14.8 |
Exploitation
| In CISA KEV since | 30 Mar 2023 |
|---|---|
| Due date for US federal agencies | 20 Apr 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2021-30900 on NVD
- CVE-2021-30900 in the CISA KEV catalog
- https://support.apple.com/en-us/HT21286 (cited by CISA)
- https://support.apple.com/en-us/HT212868 (cited by CISA)
- https://support.apple.com/kb/HT212872 (cited by CISA)
- https://support.apple.com/en-us/HT212867 Vendor Advisory
- https://support.apple.com/en-us/HT212868 Vendor Advisory
- https://support.apple.com/kb/HT212872 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.