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ExploitedIn CISA KEVFix available

CVE-2022-42856

Exploitation confirmed. First attested on 2022-12-14 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2022-12-15
  • Fixed in16.1.2 · 15.7.2
  • WeaknessCWE-843

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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..

Timeline

dates in UTC
  1. 2022-12-14Added to the CISA KEV catalogCISA KEV
  2. 2022-12-14Listed as exploited by GCVEGCVE
  3. 2022-12-14Exploitation first reportedCISA KEV
  4. 2022-12-1519:15CVE publishedNVD
  5. 2025-01-2821:34SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-42856?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-42856?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple iphone os
BranchAffectedFixed in
16.x≥ 16.0, < 16.1.216.1.2
15.7< 15.7.215.7.2
Apple ipados
BranchAffectedFixed in
15.7< 15.7.215.7.2
Apple macos
BranchAffectedFixed in
13.1< 13.113.1

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA4 products

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apple tvOS
    Affected
    • < 16.2fixed in 16.2custom
  • Apple tvOS
    Affected
    • < 13.1fixed in 13.1custom
  • Apple tvOS
    Affected
    • < 15.7fixed in 15.7custom
  • Apple tvOS
    Affected
    • < 16.1fixed in 16.1custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-05-30

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • qtwebkit-opensource-srcUbuntu:24.04:LTSall versions · no fixed version listed
  • webkit2Mageia:8all versions · fixed in 2.38.3-1.mga8
  • webkit2gtkUbuntu:22.04:LTSall versions · fixed in 2.38.3-0ubuntu0.22.04.1
  • webkit2gtkUbuntu:20.04:LTSall versions · fixed in 2.38.3-0ubuntu0.20.04.1
  • webkit2gtkDebian:10all versions · fixed in 2.38.3-1~deb10u1
  • webkit2gtk3SUSE:OpenStack Cloud Crowbar 9all versions · fixed in 2.38.3-2.123.1
  • webkit2gtk3SUSE:OpenStack Cloud 9all versions · fixed in 2.38.3-2.123.1
  • webkit2gtk3SUSE:Manager Server 4.2all versions · fixed in 2.38.3-150200.57.1

45 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-42856 Red Hat Product Security105 products fixed · 9 known affected

    webkitgtk: processing maliciously crafted web content may lead to an arbitrary code execution

    webkitgtk as a component of Red Hat Enterprise Linux 6 · webkitgtk-devel as a component of Red Hat Enterprise Linux 6 · webkitgtk-doc as a component of Red Hat Enterprise Linux 6 · +6 more

  • RHSA-2025:10364 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: webkitgtk4 security update

  • RHSA-2023:0021 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2023:0016 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

Full record on NVD

Fix

  1. Update Apple iphone os to 16.1.2 · 15.7.2
  2. CISA’s required action: Apply updates per vendor instructions.due 2023-01-04
  3. Vendor fix Red Hat Product Security RHSA-2025:10364 · 13 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  4. Workaround from the vendor Red Hat Product Security RHSA-2025:10364 · 13 productsSetting the environment variable JSC_useFTLJIT=0 will disable the vulnerable code. (This will also somewhat slow down JavaScript execution.)
  5. No fix planned, says the vendor Red Hat Product Security CVE-2022-42856 · 9 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-12-14
Patch Due Date
2023-01-04
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2022-12-15
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-qh2r-8xvg-hm24

Frequently asked questions

What is CVE-2022-42856?

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..

Is CVE-2022-42856 actively exploited?

Yes. CVE-2022-42856 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-01-04.

What is the CVSS score for CVE-2022-42856?

CVE-2022-42856 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record