CVE-2021-1782
KEVApple Multiple Products Race Condition Vulnerability
Description
Apple iOS, iPadOs, macOS, watchOS, and tvOS contain a race condition vulnerability that may allow a malicious application to elevate privileges.
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..
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HPublishedApr 2, 2021
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueNov 17, 2021
References
- support.apple.com/en-us/HT212146Release NotesVendor Advisory
- support.apple.com/en-us/HT212147Release NotesVendor Advisory
- support.apple.com/en-us/HT212148Release NotesVendor Advisory
- support.apple.com/en-us/HT212149Release NotesVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1782US Government Resource
0 recent articles mention this CVE
65
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1804 days
- CVSS
- 7.0 HIGH
- EPSS (30-day exploit probability)
- 2.2% · top 17% of all CVEs
- Weakness
- CWE-667
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.