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Fencer Vulns
high 8.8

CVE-2022-22620 kev in the critical feed json

A use after free issue was addressed with improved memory management.

published 2022-03-18 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-27765

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2022-02-11
epss
16.3%
EPSS 16.3% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.2.1, iOS 15.3.1 and iPadOS 15.3.1, Safari 15.3 (v. 16612.4.9.1.8 and 15612.4.9.1.8). Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Patch / fix

cisa required action Apply updates per vendor instructions.

  • Apple Safari (v and ) 15.3
  • Apple macOS 12.2, 15.3
  • wpewebkit Debian 14, Debian 13, Debian 12 2.34.6-1
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.34.6-1

debian advisories DEBIAN-CVE-2022-22620

  • webkit2gtk Ubuntu 20.04 LTS 2.34.6-0ubuntu0.20.04.1
  • webkit2gtk Ubuntu 22.04 LTS 2.35.90-1ubuntu1

ubuntu advisories UBUNTU-CVE-2022-22620

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

  • webkit2gtk3 RHEL 8 2.34.6-1.el8
  • webkit2gtk3-jsc RHEL 8 2.34.6-1.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-2022:1777

  • webkit2gtk3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 2.34.6-2.88.1
  • webkit2gtk3 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +9 more 2.34.6-29.1
  • webkit2gtk3 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 2.34.6-3.97.1

suse advisories SUSE-SU-2022:0811-1SUSE-SU-2022:0705-1SUSE-SU-2022:0703-1

  • webkit2gtk3 openSUSE Leap 15.3 2.34.6-29.1

opensuse advisories openSUSE-SU-2022:0705-1

  • webkit2gtk3 AlmaLinux 8 2.34.6-1.el8
  • webkit2gtk3-jsc AlmaLinux 8 2.34.6-1.el8

almalinux advisories ALSA-2022:1777

  • webkit2gtk3 Rocky Linux 8 2.34.6-1.el8

rocky linux advisories RLSA-2022:1777

  • webkit2gtk Alpine 3.20, Alpine 3.19, Alpine 3.18 +2 more 2.34.6-r0

alpine advisories ALPINE-CVE-2022-22620

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

  • webkit2gtk-4.1 Arch Linux 2.34.6-1

arch linux advisories AVG-2650

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-2022-22620 updated cvss 8.8

webkitgtk: maliciously crafted web content may lead to arbitrary code execution due to use after free

  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.34.6-1.el8, webkit2gtk3-jsc 2.34.6-1.el8
    fixed: vendor fix RHSA-2022:1777
  • 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 Enterprise Linux 9 webkit2gtk3, webkit2gtk3-jsc
    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. 0-day patched (Project Zero)
  2. Added to CISA KEV
  3. CISA patch deadline
  4. Published
  5. CISA SSVC: exploitation active

Known exploited

Added
4 y ago
Patch by
2022-02-25 (4 y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Apple, iOS, iPadOS, and macOS
CISA name
Apple iOS, iPadOS, and macOS Webkit Use-After-Free Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2022-02-10
Details
project zero root cause analysis

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

16.34% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Apple Safari (v and )
  • Apple macOS

Classification

Weakness

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.