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CVE-2022-22620

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

8.8 HIGHActively exploited (CISA KEV)EPSS 16.3%
  1. Published18 Mar 2022
  2. Added to CISA KEV11 Feb 2022
  3. Remediation due25 Feb 2022
Actively exploited (CISA KEV)

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.

Added to KEV: 11 Feb 2022Federal remediation due: 25 Feb 2022

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..

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple Safari< 15.3
Apple iPadOS< 15.3.1
Apple iPhone OS< 15.3.1
Apple macOS≥ 12.0.0 < 12.2.1

Remediation

Fixed in
Apple Safari≥ 15.3
Apple iPadOS≥ 15.3.1
Apple iPhone OS≥ 15.3.1
Apple macOS≥ 12.2.1

References

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Frequently asked

Is CVE-2022-22620 being actively exploited?

Yes. CVE-2022-22620 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 11 Feb 2022.

How severe is CVE-2022-22620?

CVE-2022-22620 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 16.3% probability of exploitation.

Which products are affected by CVE-2022-22620?

Affected products include Apple Safari, Apple iPadOS, Apple iPhone OS, Apple macOS.

How do I fix CVE-2022-22620?

Upgrade affected software to a fixed version, for example Apple Safari 15.3, Apple iPadOS 15.3.1, Apple iPhone OS 15.3.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-22620 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.