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Fencer Vulns
critical 9.8

CVE-2020-9850 in the critical feed json

A logic issue was addressed with improved restrictions.

published 2020-06-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30629

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
77.4%
EPSS 77.4% chance of exploitation in 30 days, percentile 99.5%
public exploits
1
Metasploit

Summary

A logic issue was addressed with improved restrictions. This issue is fixed in iOS 13.5 and iPadOS 13.5, tvOS 13.4.5, watchOS 6.2.5, Safari 13.1.1, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. A remote attacker may be able to cause arbitrary code execution.

Patch / fix

  • Apple iOS iOS 13.5 and iPadOS 13.5
  • Apple tvOS tvOS 13.4.5
  • Apple watchOS watchOS 6.2.5
  • Apple Safari Safari 13.1.1
  • Apple iTunes for Windows iTunes 12.10.7 for Windows
  • Apple iCloud for Windows iCloud for Windows 11.2
  • Apple iCloud for Windows (Legacy) iCloud for Windows 7.19
  • wpewebkit Debian 14, Debian 13, Debian 12 2.28.3-1
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.28.3-1

debian advisories DEBIAN-CVE-2020-9850

  • webkit2gtk Ubuntu 18.04 LTS 2.28.3-0ubuntu0.18.04.1
  • webkit2gtk Ubuntu 20.04 LTS 2.28.3-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2020-9850

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • LibRaw RHEL 8 0.19.5-2.el8
  • webkit2gtk3 RHEL 8 2.28.4-1.el8
  • webkit2gtk3-jsc RHEL 8 2.28.4-1.el8
  • gnome-settings-daemon RHEL 8 3.32.0-11.el8
  • webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
  • webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9

red hat advisories RHSA-2025:10364RHSA-2020:4451

  • webkit2gtk3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 2.28.3-2.56.1
  • webkit2gtk3 SLE Module for Desktop Applications 15 SP2, SLE Module for Basesystem 15 SP2 2.28.3-3.3.1
  • webkit2gtk3 SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +3 more 2.28.3-3.57.2

suse advisories SUSE-SU-2020:2069-1SUSE-SU-2020:1992-1SUSE-SU-2020:1990-1

  • webkit2gtk3 openSUSE Leap 15.1 2.28.3-lp151.2.21.1

opensuse advisories openSUSE-SU-2020:1064-1

  • gvfs AlmaLinux 8 1.36.2-10.el8
  • vte291 AlmaLinux 8 0.52.4-2.el8
  • libsoup AlmaLinux 8 2.62.3-2.el8
  • potrace AlmaLinux 8 1.15-3.el8
  • tracker AlmaLinux 8 2.1.5-2.el8
  • nautilus AlmaLinux 8 3.28.1-14.el8
  • pipewire AlmaLinux 8 0.3.6-1.el8
  • PackageKit AlmaLinux 8 1.1.12-6.el8

almalinux advisories ALSA-2020:4451

  • gtk3 Rocky Linux 8 3.22.30-6.el8
  • LibRaw Rocky Linux 8 0.19.5-2.el8
  • vte291 Rocky Linux 8 0.52.4-2.el8
  • libsoup Rocky Linux 8 2.62.3-2.el8
  • potrace Rocky Linux 8 1.15-3.el8
  • tracker Rocky Linux 8 2.1.5-2.el8
  • pipewire Rocky Linux 8 0.3.6-1.el8
  • PackageKit Rocky Linux 8 1.1.12-6.el8

rocky linux advisories RLSA-2020:4451

  • webkit2gtk Alpine 3.20, Alpine 3.19, Alpine 3.18 +6 more 2.28.3-r0

alpine advisories ALPINE-CVE-2020-9850

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-9850 updated cvss 7.3

webkitgtk: Logic issue may lead to arbitrary code execution

  • Red Hat Enterprise Linux 6 webkitgtk
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.28.4-1.el8, webkit2gtk3-jsc 2.28.4-1.el8
    fixed: vendor fix RHSA-2020:4451
  • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.3-2.el7_9, webkitgtk4-jsc 2.48.3-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.3-2.el7_9, webkitgtk4-devel 2.48.3-2.el7_9, webkitgtk4-debuginfo 2.48.3-2.el7_9, webkitgtk4-jsc-devel 2.48.3-2.el7_9
    fixed: vendor fix RHSA-2025:10364
  • Red Hat CodeReady Linux Builder (v. 8) gvfs 1.36.2-10.el8, nautilus 3.28.1-14.el8, frei0r-plugins 1.6.1-7.el8 Red Hat Enterprise Linux AppStream (v. 8) gdm 3.28.3-34.el8, gtk3 3.22.30-6.el8, gvfs 1.36.2-10.el8, potrace 1.15-3.el8, LibRaw 0.19.5-2.el8, tracker 2.1.5-2.el8, +72 more Red Hat Enterprise Linux BaseOS (v. 8) libsoup 2.62.3-2.el8, pygobject3 3.28.3-2.el8, python3-gobject-base 3.28.3-2.el8, gsettings-desktop-schemas 3.32.0-5.el8
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (Metasploit exploit/osx/browser/safari_in_operator_side_effect)
  2. Published

Exploit prediction

77.40% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Apple iOS
  • Apple tvOS
  • Apple watchOS
  • Apple Safari
  • Apple iTunes for Windows
  • Apple iCloud for Windows
  • Apple iCloud for Windows (Legacy)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.