CVE-2023-41993
Apple Multiple Products WebKit Code Execution Vulnerability
Apple Multiple Products
The issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 25 September 2023. US federal agencies were required to remediate it by 16 October 2023.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 23.7%, which is higher than 97.8% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2023-41993 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-41993.
What does CVE-2023-41993 affect?
CVE-2023-41993 affects Apple Multiple Products. The issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.
How severe is CVE-2023-41993?
CVE-2023-41993 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 23.7%, higher than 97.8% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 16 October 2023.
How should organisations respond to CVE-2023-41993?
Apply the vendor patch for Apple Multiple Products as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.