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CVE-2022-42856

Apple iOS Type Confusion

8.8 HIGHActively exploited (CISA KEV)EPSS 8.52%
  1. Published15 Dec 2022
  2. Added to CISA KEV14 Dec 2022
  3. Remediation due4 Jan 2023
Actively exploited (CISA KEV)

Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.

Added to KEV: 14 Dec 2022Federal remediation due: 4 Jan 2023

Description

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. 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 against versions of iOS released before iOS 15.1..

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< 16.2
Apple iPadOS< 15.7.2
Apple iPhone OS≥ 16.0 < 16.1.2 · < 15.7.2
Apple macOS< 13.1
Apple Tvos< 16.2

Remediation

Fixed in
Apple Safari≥ 16.2
Apple iPadOS≥ 15.7.2
Apple iPhone OS≥ 16.1.2
Apple macOS≥ 13.1
Apple Tvos≥ 16.2

References

and 3 more references

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Frequently asked

Is CVE-2022-42856 being actively exploited?

Yes. CVE-2022-42856 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 14 Dec 2022.

How severe is CVE-2022-42856?

CVE-2022-42856 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 8.52% probability of exploitation.

Which products are affected by CVE-2022-42856?

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

How do I fix CVE-2022-42856?

Upgrade affected software to a fixed version, for example Apple Safari 16.2, Apple iPadOS 15.7.2, Apple iPhone OS 16.1.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-42856 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.