Vulnerability · Published Sep 8, 2021 · Assigned by apple
CVE-2021-1834
Critical 9.8
In plain English
A critical-severity security flaw in macOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 87% of all known vulnerabilities).
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)3.0%top 12.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to execute arbitrary code with kernel privileges.
Affected products (as reported)
References
- https://support.apple.com/en-us/HT212325 x_refsource_MISC
- https://support.apple.com/en-us/HT212326 x_refsource_MISC
- https://support.apple.com/en-us/HT212327 x_refsource_MISC