Actively exploited · Published Apr 2, 2021 · Assigned by apple

CVE-2021-1782

High 7.0 Exploited

In plain English

A high-severity security flaw in iOS and iPadOS from Apple. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.

Severity (CVSS 3.1)7.0High

Exploit odds (30 days)2.2%top 17.2% of all CVEs

Exploited in the wildYesCISA KEV since Nov 3, 2021

Attack tooling1Public PoC

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Nov 17, 2021.

Official description

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..

Affected products (as reported)

Vendor	Product	Versions
Apple	iOS and iPadOS	unspecified – before 14.4
Apple	macOS	unspecified – before 11.2
Apple	macOS	unspecified – before 7.3
Apple	macOS	unspecified – before 14.4

Weakness: CWE-667 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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