CVEs / CVE-2021-30807
CVE-2021-30807: Apple Multiple Products Memory Corruption Vulnerability
- Known exploited in the CISA KEV catalog since 3 Nov 2021
- high 7.8 CVSS 3.1 (NVD)
- EPSS 28.8% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Apple iOS, iPadOS, macOS, and watchOS IOMobileFrameBuffer contain a memory corruption vulnerability which may allow an application to execute code with kernel privileges.
Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. 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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apple macOS | from unspecified, before 11.5 | 11.5 |
| Apple macOS | from unspecified, before 14.7 | 14.7 |
| Apple macOS | from unspecified, before 7.6 | 7.6 |
Exploitation
| In CISA KEV since | 3 Nov 2021 |
|---|---|
| Due date for US federal agencies | 17 Nov 2021 |
| 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-2021-30807 on NVD
- CVE-2021-30807 in the CISA KEV catalog
- https://support.apple.com/en-us/HT212622 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212623 Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212713 Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807 Third Party Advisory, 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.