Is CVE-2022-42863 in the CISA KEV catalog?

No. CVE-2022-42863 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-42863?

CVE-2022-42863 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2022-42863?

CVE-2022-42863 has an EPSS score of 1.12% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-42863?

Upgrade webkit2gtk on debian 11 to 2.38.0-1~deb11u1 or later. Fixes are available for 32 affected products.

CVE & CISA-KEV Catalog

CVE-2022-42863

HIGH

8.8

CVSS v3

NVD

Description

A memory corruption issue was addressed with improved state management. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 16.2 and iPadOS 16.2, watchOS 9.2. Processing maliciously crafted web content may lead to arbitrary code execution.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

webkit2gtkDebian

Fixed in:2.38.0-1~deb11u1CVE-2022-42863

Fixed in:2.38.0-1CVE-2022-42863

webkit2gtk3Rocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3Red Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-debuginfoRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-debuginfoRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-debugsourceRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-debugsourceRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-develRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-develRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-devel-debuginfoRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-devel-debuginfoRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jscRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jscRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-debuginfoRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-debuginfoRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-develRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-develRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-devel-debuginfoRocky

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkit2gtk3-jsc-devel-debuginfoRed Hat / RHEL

Fixed in:0:2.38.5-1.el8RHSA-2023:2834

Fixed in:0:2.38.5-1.el9RHSA-2023:2256

webkitgtk4Rocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4Red Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-debuginfoRed Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-debuginfoRocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-develRocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-develRed Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-docRocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-docRed Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-jscRocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-jscRed Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-jsc-develRocky

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

webkitgtk4-jsc-develRed Hat / RHEL

Fixed in:0:2.48.3-2.el7_9RHSA-2025:10364

SafariWindows application

Affected:16.2Fixed in:16.2Apple Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

1.12%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Vendor Advisory5

Third-Party Advisory6

Other references1

security.gentoo.org

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-21.