CVE-2023-41064
Apple iOS, iPadOS, and macOS ImageIO Buffer Overflow Vulnerability
Apple iOS, iPadOS, and macOS
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 16.6.1 and iPadOS 16.6.1, macOS Monterey 12.6.9, macOS Ventura 13.5.2, iOS 15.7.9 and iPadOS 15.7.9, macOS Big Sur 11.7.10. Processing a maliciously crafted image may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 11 September 2023. US federal agencies were required to remediate it by 2 October 2023.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 53.4%, which is higher than 99% 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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2023-41064 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-41064.
What does CVE-2023-41064 affect?
CVE-2023-41064 affects Apple iOS, iPadOS, and macOS. A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 16.6.1 and iPadOS 16.6.1, macOS Monterey 12.6.9, macOS Ventura 13.5.2, iOS 15.7.9 and iPadOS 15.7.9, macOS Big Sur 11.7.10. Processing a maliciously crafted image may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
How severe is CVE-2023-41064?
CVE-2023-41064 is rated HIGH with a CVSS base score of 7.8. EPSS puts the probability of exploitation in the next 30 days at 53.4%, higher than 99% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 2 October 2023.
How should organisations respond to CVE-2023-41064?
Apply the vendor patch for Apple iOS, iPadOS, and macOS 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.