CVE-2021-30807
Last modified
CVE-2021-30807 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 28.84% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 14.7.1 |
| Apple | Iphone Os | < 14.7.1 |
| Apple | Macos | < 11.5.1 |
| Apple | Watchos | < 7.6.1 |
References
- https://support.apple.com/en-us/HT212622Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212623Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212713Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212622Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212623Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212713Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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