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CRITICAL · CVSS 9.8 CISA Known Exploited Vulnerability

CVE-2022-22587

Apple Memory Corruption Vulnerability

Apple iOS and macOS

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 15.3 and iPadOS 15.3, macOS Big Sur 11.6.3, macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

CVSS
9.8
CRITICAL
EPSS
11.6%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
18 Mar 2022
CWE-787

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 28 January 2022. US federal agencies were required to remediate it by 11 February 2022.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 11.6%, which is higher than 96% 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:N/S:U/C:H/I:H/A:H

Frequently asked questions

Is CVE-2022-22587 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2022-22587.

What does CVE-2022-22587 affect?

CVE-2022-22587 affects Apple iOS and macOS. A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 15.3 and iPadOS 15.3, macOS Big Sur 11.6.3, macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

How severe is CVE-2022-22587?

CVE-2022-22587 is rated CRITICAL with a CVSS base score of 9.8. EPSS puts the probability of exploitation in the next 30 days at 11.6%, higher than 96% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 11 February 2022.

How should organisations respond to CVE-2022-22587?

Apply the vendor patch for Apple iOS 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.