CVE-2020-3897 — webkitgtk: Type confusion leading to arbitrary code execution

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HIGH

webkitgtk: Type confusion leading to arbitrary code execution

Published Apr 1, 2020

8.8

HIGH

CVSS 3.1

EPSS 4.48%

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. A remote attacker may be able to cause arbitrary code execution.

Affected products

Vendor Apple Product Safari Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <Safari 13.1
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 10.9.3
Vendor Apple Product iCloud for Windows (Legacy) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.18
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 13.4 and iPadOS 13.4
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes for Windows 12.10.5
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 13.4
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <watchOS 6.2

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

Safari

n/a

Version	Status	Constraints
unspecified	affected	<Safari 13.1

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 10.9.3

Apple

iCloud for Windows (Legacy)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.18

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 13.4 and iPadOS 13.4

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes for Windows 12.10.5

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 13.4

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<watchOS 6.2

Red Hat Enterprise Linux 7

webkitgtk4-0:2.28.2-2.el7

Fixed · RHSA-2020:4035
Red Hat Enterprise Linux 8

webkit2gtk3-0:2.28.4-1.el8

Fixed · RHSA-2020:4451
Red Hat Enterprise Linux 6

webkitgtk

Out of support scope
Red Hat Enterprise Linux 7

webkitgtk3

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	webkitgtk4-0:2.28.2-2.el7	Fixed	RHSA-2020:4035
Red Hat Enterprise Linux 8	webkit2gtk3-0:2.28.4-1.el8	Fixed	RHSA-2020:4451
Red Hat Enterprise Linux 6	webkitgtk	Out of support scope	n/a
Red Hat Enterprise Linux 7	webkitgtk3	Will not fix	n/a

Remediation

No remediation recorded yet.

Metrics

4.48% 0.04479

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.04479

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (19 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	4.48% (0.04479)	91.17th	v5 (v2026.06.15)
Jun 15, 2026	4.41% (0.04406)	90.04th	v5 (v2026.06.15)
Aug 10, 2025	1.99% (0.01988)	82.85th	v4 (v2025.03.14)
Mar 30, 2025	0.84% (0.00845)	72.66th	v4 (v2025.03.14)
Mar 29, 2025	2.44% (0.02437)	75.23th	v4 (v2025.03.14)
Mar 17, 2025	0.84% (0.00845)	73.17th	v4 (v2025.03.14)
Dec 12, 2024	2.11% (0.02108)	89.59th	v3 (v2023.03.01)
Mar 25, 2024	2.11% (0.02108)	88.90th	v3 (v2023.03.01)
Feb 4, 2024	1.50% (0.01497)	85.55th	v3 (v2023.03.01)
Jan 20, 2024	1.20% (0.01204)	83.73th	v3 (v2023.03.01)
Aug 20, 2023	1.15% (0.01150)	83.01th	v3 (v2023.03.01)
Mar 7, 2023	1.32% (0.01319)	83.86th	v3 (v2023.03.01)
Mar 6, 2023	3.93% (0.03927)	85.70th	v2 (v2022.01.01)
Apr 1, 2022	3.93% (0.03927)	84.22th	v2 (v2022.01.01)
Feb 4, 2022	44.83% (0.44826)	97.74th	v2 (v2022.01.01)
Feb 3, 2022	2.40% (0.02396)	53.84th	v1
Jan 6, 2022	2.40% (0.02396)	53.39th	v1
Sep 1, 2021	0.54% (0.00544)	32.38th	v1
Apr 14, 2021	0.54% (0.00544)	0.00th	v1

Weaknesses (1)

CWE-843

References (12)

https://access.redhat.com/security/cve/CVE-2020-3897
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876468
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2020-3897
https://support.apple.com/HT211101
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211102
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211103
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211104
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211105
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211106
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211107
x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0005.html
https://www.cve.org/CVERecord?id=CVE-2020-3897

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2020-3897		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876468		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2020-3897
https://support.apple.com/HT211101		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211102		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211103		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211104		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211105		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211106		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211107		x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0005.html
https://www.cve.org/CVERecord?id=CVE-2020-3897

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner apple

Published Apr 1, 2020

Updated Aug 4, 2024

Reserved Dec 18, 2019

Link CVE-2020-3897

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2020-3897

Red Hat

Severity Moderate

Public date Apr 27, 2020

Links CVE-2020-3897 - Bugzilla