CVE-2019-8783 - webkitgtk: Multiple memory corruption issues leading to arbitrary code execution

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HIGH

webkitgtk: Multiple memory corruption issues leading to arbitrary code execution

Published Dec 18, 2019

8.8

HIGH

CVSS 3.1

EPSS 1.95%

Description

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 13.2 and iPadOS 13.2, tvOS 13.2, Safari 13.0.3, iTunes for Windows 12.10.2, iCloud for Windows 11.0, iCloud for Windows 7.15. 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
  <Safari 13.0.3
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 11.0
Vendor Apple Product iCloud for Windows (Legacy) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.15
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 13.2 and iPadOS 13.2
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes for Windows 12.10.2
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 13.2

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 13.0.3

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 11.0

Apple

iCloud for Windows (Legacy)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.15

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 13.2 and iPadOS 13.2

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes for Windows 12.10.2

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 13.2

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

1.95% 0.01952

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.

EPSS probability 0.01952

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 (16 key points)

Flat stretches are collapsed. Showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 4, 2026	1.95% (0.01952)	79.54th	v5 (v2026.06.15)
Jun 15, 2026	1.96% (0.01959)	77.64th	v5 (v2026.06.15)
Mar 17, 2025	0.34% (0.00337)	54.31th	v4 (v2025.03.14)
Dec 17, 2024	0.95% (0.00952)	82.98th	v3 (v2023.03.01)
Dec 12, 2024	2.03% (0.02028)	89.40th	v3 (v2023.03.01)
Nov 24, 2023	1.99% (0.01995)	87.56th	v3 (v2023.03.01)
Oct 22, 2023	1.75% (0.01752)	86.56th	v3 (v2023.03.01)
Oct 7, 2023	1.41% (0.01410)	84.94th	v3 (v2023.03.01)
Mar 7, 2023	1.35% (0.01347)	84.03th	v3 (v2023.03.01)
Mar 6, 2023	2.03% (0.02031)	79.34th	v2 (v2022.01.01)
Apr 1, 2022	2.03% (0.02031)	77.51th	v2 (v2022.01.01)
Feb 4, 2022	17.70% (0.17698)	93.35th	v2 (v2022.01.01)
Feb 3, 2022	1.66% (0.01663)	34.27th	v5 (v2026.06.15)
Jan 6, 2022	1.66% (0.01663)	33.57th	v1
Sep 1, 2021	0.38% (0.00376)	7.14th	v1
Apr 14, 2021	0.38% (0.00376)	0.00th	v1

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (12)

https://access.redhat.com/security/cve/CVE-2019-8783
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876548
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8783
https://security.gentoo.org/glsa/202003-22
vendor-advisoryx_refsource_GENTOOThird Party Advisory
https://support.apple.com/HT210721
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210723
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210725
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210726
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210727
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210728
x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2019-0006.html
https://www.cve.org/CVERecord?id=CVE-2019-8783

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2019-8783		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876548		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8783
https://security.gentoo.org/glsa/202003-22		vendor-advisoryx_refsource_GENTOOThird Party Advisory
https://support.apple.com/HT210721		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210723		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210725		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210726		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210727		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210728		x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2019-0006.html
https://www.cve.org/CVERecord?id=CVE-2019-8783