# CVE-2021-1782

A race condition was addressed with improved locking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited..

- Page: https://www.vulneraibility.com/cve/CVE-2021-1782
- CVSS: 7.0
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 2.20% (percentile 82.8)
- Unvetted proof-of-concept code on GitHub: 2 GitHub proofs of concept (first 2021-02-04)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2024-02-09)
- Weakness: CWE-667
- Published: 2021-04-02

## Affected versions

- Apple iOS and iPadOS: affected < 14.4
- Apple macOS: affected < 11.2; < 7.3; < 14.4

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

## References

- [other] https://support.apple.com/en-us/HT212147
- [other] https://support.apple.com/en-us/HT212146
- [other] https://support.apple.com/en-us/HT212148
- [other] https://support.apple.com/en-us/HT212149
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1782

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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.