# CVE-2021-30807

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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-30807
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 28.84% (percentile 98.2)
- Unvetted proof-of-concept code on GitHub: 2 GitHub proofs of concept (first 2021-10-09)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-787
- Published: 2021-10-19

## Affected versions

- Apple macOS: affected < 11.5; < 14.7; < 7.6

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://support.apple.com/en-us/HT212622
- [other] https://support.apple.com/en-us/HT212623
- [other] https://support.apple.com/en-us/HT212713
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.