Vulnerability · Published Aug 24, 2021 · Assigned by apple
CVE-2021-30937
High 7.8
In plain English
A high-severity security flaw in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 17.3% (higher than 97% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)17.3%top 2.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
A memory corruption vulnerability was addressed with improved locking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to execute arbitrary code with kernel privileges.
Affected products (as reported)
References
- https://support.apple.com/en-us/HT212975 x_refsource_MISC
- https://support.apple.com/en-us/HT212976 x_refsource_MISC
- https://support.apple.com/en-us/HT212978 x_refsource_MISC
- https://support.apple.com/en-us/HT212979 x_refsource_MISC
- https://support.apple.com/en-us/HT212981 x_refsource_MISC
- https://support.apple.com/en-us/HT212980 x_refsource_MISC
- http://packetstormsecurity.com/files/165475/XNU-inm_merge-Heap-Use-After-Free.html x_refsource_MISC