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Fencer Vulns
high 8.1

CVE-2026-64719 json

An out-of-bounds access issue was addressed with improved bounds checking.

published 2026-07-27 3 mo ago modified 2026-08-17 2 mo ago also EUVD-2026-49476

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.6, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Patch / fix

  • Apple Safari 26.6
  • Apple iOS and iPadOS 18.7.10, 26.6
  • Apple macOS 26.6
  • Apple tvOS 26.6
  • Apple visionOS 26.6
  • Apple watchOS 26.6
  • wpewebkit Debian 14 2.52.6-1
  • webkit2gtk Debian 13 2.52.6-1~deb13u1
  • webkit2gtk Debian 14 2.52.6-1

debian advisories DEBIAN-CVE-2026-64719

  • webkit2gtk Ubuntu 24.04 LTS 2.52.6-0ubuntu0.24.04.1
  • webkit2gtk Ubuntu 26.04 LTS 2.52.6-0ubuntu0.26.04.1

ubuntu advisories UBUNTU-CVE-2026-64719

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 SLES for SAP applications 16.0, SLES 16.0 2.54.1-160000.1.1
  • webkit2gtk4 SLES for SAP applications 16.0, SLES 16.0 2.54.1-160000.1.1
  • webkit2gtk3 SLE Module for Desktop Applications 15 SP7 2.52.6-150600.12.74.1
  • webkit2gtk4 SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 2.52.6-150600.12.74.1
  • webkit2gtk3-soup2 SLE Module for Basesystem 15 SP7 2.52.6-150600.12.74.1
  • webkit2gtk3 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.52.6-150400.4.149.2
  • webkit2gtk4 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.52.6-150400.4.149.2
  • webkit2gtk3-soup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.52.6-150400.4.149.2

suse advisories SUSE-SU-2026:24225-1SUSE-SU-2026:4020-1SUSE-SU-2026:4001-1

  • webkit2gtk3 openSUSE Leap 16.0 2.54.1-160000.1.1
  • webkit2gtk4 openSUSE Leap 16.0 2.54.1-160000.1.1
  • webkit2gtk3-soup2 openSUSE Leap 16.0 2.54.1-160000.1.1

opensuse advisories openSUSE-SU-2026:22076-1

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-2026-64719 updated cvss 8.8

webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash

  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, webkitgtk4, libwebkit2gtk, webkitgtk4-jsc, webkitgtk4-plugin-process-gtk2 Red Hat Enterprise Linux 8 webkit2gtk3, webkit2gtk3-jsc, webkit2gtk3-plugin-process-gtk2 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected products

  • Apple Safari
  • Apple iOS and iPadOS
  • Apple macOS
  • Apple tvOS
  • Apple visionOS
  • Apple watchOS

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.