CVE-2022-22620

Apple iOS, iPadOS, and macOS: Webkit Use-After-Free

As of , CVE-2022-22620 in Apple iOS, iPadOS, and macOS is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 11 February 2022
US federal deadline
25 February 202214 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.16Higher than 96% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
No score that dayThe EPSS file of the day CISA listed it has no score for it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Apple iOS, iPadOS, and macOS WebKit contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

CISA's description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.2.1, iOS 15.3.1 and iPadOS 15.3.1, Safari 15.3 (v. 16612.4.9.1.8 and 15612.4.9.1.8). Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

The CVE record's description, from apple

CVE published
18 March 2022
Assigned by
apple
CVSS
8.8 High (CVSS 3.1, from CISA-ADP)
CWE-416
Use After Free
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. CISA added it to its list of exploited vulnerabilities.
  2. The US federal deadline to fix it.
  3. The CVE record was published.

iOS, iPadOS, and macOS: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2020-9934Input ValidationApple iOS, iPadOS, and macOSPatch this weekMetasploit module0.03
CVE-2023-41064ImageIO Buffer OverflowApple iOS, iPadOS, and macOSPatch this weekEPSS 0.530.53
CVE-2025-43300Out-of-Bounds WriteApple iOS, iPadOS, and macOSPatch soon0.32
CVE-2023-28206IOSurfaceAccelerator Out-of-Bounds WriteApple iOS, iPadOS, and macOSPatch soon0.23
CVE-2021-30858iOS, iPadOS, macOS Use-After-FreeApple iOS, iPadOS, and macOSPatch soon0.13
CVE-2021-1870WebKit Remote Code ExecutionApple iOS, iPadOS, and macOSPatch soon0.08
CVE-2021-1871WebKit Remote Code ExecutionApple iOS, iPadOS, and macOSPatch soon0.07
CVE-2021-30900Out-of-Bounds WriteApple iOS, iPadOS, and macOSPatch soon0.05
CVE-2022-32917Remote Code ExecutionApple iOS, iPadOS, and macOSPatch soon0.06
CVE-2021-30869Type ConfusionApple iOS, iPadOS, and macOSPatch soon0.04

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