CVE-2019-8844 — webkitgtk: Processing maliciously crafted web content may lead to arbitrary code execution

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HIGH

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

Published Oct 27, 2020

8.8

HIGH

CVSS 3.1

EPSS 2.18%

Description

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in tvOS 13.3, watchOS 6.1.1, iCloud for Windows 10.9, iOS 13.3 and iPadOS 13.3, Safari 13.0.4, iTunes 12.10.3 for Windows, iCloud for Windows 7.16. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected products

Vendor Apple Product Safari Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13.0
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <10.9
- Version
  unspecified
  Status
  affected
  Constraints
  <7.16
Vendor Apple Product iOS and iPadOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13.3
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <12.10
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13.3
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <6.1

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	<13.0

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<10.9
unspecified	affected	<7.16

Apple

iOS and iPadOS

n/a

Version	Status	Constraints
unspecified	affected	<13.3

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<12.10

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<13.3

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<6.1

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

2.18% 0.02182

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02182

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (17 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	2.18% (0.02182)	81.71th	v5 (v2026.06.15)
Jun 15, 2026	2.11% (0.02108)	79.29th	v5 (v2026.06.15)
Aug 13, 2025	2.46% (0.02465)	84.61th	v4 (v2025.03.14)
Mar 30, 2025	0.66% (0.00658)	68.69th	v4 (v2025.03.14)
Mar 29, 2025	1.96% (0.01958)	72.59th	v4 (v2025.03.14)
Mar 17, 2025	0.66% (0.00658)	69.36th	v4 (v2025.03.14)
Dec 17, 2024	3.53% (0.03534)	91.43th	v3 (v2023.03.01)
Feb 15, 2024	0.64% (0.00642)	78.63th	v3 (v2023.03.01)
Sep 3, 2023	0.64% (0.00642)	76.62th	v3 (v2023.03.01)
Mar 7, 2023	0.71% (0.00712)	77.40th	v3 (v2023.03.01)
Mar 6, 2023	2.03% (0.02031)	79.34th	v2 (v2022.01.01)
Feb 4, 2022	2.03% (0.02031)	56.42th	v2 (v2022.01.01)
Feb 3, 2022	0.38% (0.00376)	3.27th	v1
Jun 8, 2021	0.38% (0.00376)	0.00th	v1
Jun 6, 2021	1.66% (0.01663)	0.00th	v5 (v2026.06.15)
May 19, 2021	1.66% (0.01663)	0.00th	v1
Apr 14, 2021	0.38% (0.00376)	0.00th	v1

Weaknesses (2)

CWE-119

Buffer Overflow

CWE-787

Out-of-bounds Write

References (12)

https://access.redhat.com/security/cve/CVE-2019-8844
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1816686
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8844
https://support.apple.com/en-us/HT210785
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210789
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210790
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210792
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210793
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210794
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210795
x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0001.html
https://www.cve.org/CVERecord?id=CVE-2019-8844

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2019-8844		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1816686		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8844
https://support.apple.com/en-us/HT210785		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210789		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210790		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210792		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210793		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210794		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210795		x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0001.html
https://www.cve.org/CVERecord?id=CVE-2019-8844