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Fencer Vulns
low 3.1

CVE-2025-43531 json

A race condition was addressed with improved state handling.

published 2025-12-17 10 mo ago modified 2026-10-07 33 d ago also EUVD-2025-203977

cvss
3.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

A race condition was addressed with improved state handling. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.

Patch / fix

  • Apple Safari 26.2
  • Apple iOS and iPadOS 18.7.3, 26.2
  • Apple macOS 26.2
  • Apple tvOS 26.2
  • Apple visionOS 26.2
  • Apple watchOS 26.2
  • wpewebkit Debian 14 2.50.4-1
  • webkit2gtk Debian 12 2.50.4-1~deb12u1
  • webkit2gtk Debian 13 2.50.4-1~deb13u1
  • webkit2gtk Debian 14 2.50.4-1

debian advisories DEBIAN-CVE-2025-43531

  • webkit2gtk Ubuntu 22.04 LTS 2.50.4-0ubuntu0.22.04.1
  • webkit2gtk Ubuntu 24.04 LTS 2.50.4-0ubuntu0.24.04.1
  • webkit2gtk Ubuntu 25.10 2.50.4-0ubuntu0.25.10.1

ubuntu advisories UBUNTU-CVE-2025-43531

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 9 2.50.4-1.el9_7
  • webkit2gtk3-jsc RHEL 9 2.50.4-1.el9_7
  • webkit2gtk3 RHEL 8 2.50.4-1.el8_10
  • webkit2gtk3-jsc RHEL 8 2.50.4-1.el8_10
  • webkit2gtk3 RHEL 9.6 EUS 2.50.4-1.el9_6
  • webkit2gtk3-jsc RHEL 9.6 EUS 2.50.4-1.el9_6
  • webkitgtk4 RHEL 7 ELS 2.50.4-2.el7_9
  • webkitgtk4-jsc RHEL 7 ELS 2.50.4-2.el7_9

red hat advisories RHSA-2025:23974RHSA-2025:23975RHSA-2025:23972RHSA-2025:23973RHSA-2025:23970RHSA-2025:23971

  • webkit2gtk3 SLES for SAP applications 16.0, SLES 16.0 2.50.4-160000.1.1
  • webkit2gtk4 SLES for SAP applications 16.0, SLES 16.0 2.50.4-160000.1.1
  • webkit2gtk3 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Desktop Applications 15 SP7 +2 more 2.50.4-150600.12.54.1
  • webkit2gtk4 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +4 more 2.50.4-150600.12.54.1
  • webkit2gtk3-soup2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +2 more 2.50.4-150600.12.54.1
  • webkit2gtk3 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.50.4-150400.4.134.2
  • webkit2gtk4 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.50.4-150400.4.134.2
  • webkit2gtk3-soup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +7 more 2.50.4-150400.4.134.1

suse advisories SUSE-SU-2026:20102-1SUSE-SU-2026:0021-1SUSE-SU-2025:4528-1SUSE-SU-2025:4527-1

  • webkit2gtk3 openSUSE Leap 16.0 2.50.4-160000.1.1
  • webkit2gtk4 openSUSE Leap 16.0 2.50.4-160000.1.1
  • webkit2gtk3-soup2 openSUSE Leap 16.0 2.50.4-160000.1.1

opensuse advisories openSUSE-SU-2026:20065-1

  • webkit2gtk3 AlmaLinux 8 2.50.4-1.el8_10
  • webkit2gtk3-jsc AlmaLinux 8 2.50.4-1.el8_10
  • webkit2gtk3 AlmaLinux 9 2.50.4-1.el9_7
  • webkit2gtk3-jsc AlmaLinux 9 2.50.4-1.el9_7

almalinux advisories ALSA-2025:23663ALSA-2025:23700

  • webkit2gtk3 Rocky Linux 9 2.50.4-1.el9_7
  • webkit2gtk3 Rocky Linux 8 2.50.4-1.el8_10

rocky linux advisories RLSA-2025:23700RLSA-2025:23663

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-2025-43531 updated cvss 8.8

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

  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: workaround, no fix planned “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.50.4-1.el8_10, webkit2gtk3-jsc 2.50.4-1.el8_10
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23663
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.50.4-1.el9_7, webkit2gtk3-jsc 2.50.4-1.el9_7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23700
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) webkit2gtk3 2.50.4-1.el8_2, webkit2gtk3-jsc 2.50.4-1.el8_2
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23969
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3 2.50.4-1.el8_4, webkit2gtk3-jsc 2.50.4-1.el8_4
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23967
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3 2.50.4-1.el8_6, webkit2gtk3-jsc 2.50.4-1.el8_6 Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3 2.50.4-1.el8_6, webkit2gtk3-jsc 2.50.4-1.el8_6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23968
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3 2.50.4-1.el8_8, webkit2gtk3-jsc 2.50.4-1.el8_8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23973
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3 2.50.4-1.el9_0, webkit2gtk3-jsc 2.50.4-1.el9_0
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23970
show 7 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3 2.50.4-1.el9_2, webkit2gtk3-jsc 2.50.4-1.el9_2
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23971
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) webkit2gtk3 2.50.4-1.el9_4, webkit2gtk3-jsc 2.50.4-1.el9_4
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23972
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) webkit2gtk3 2.50.4-1.el9_6, webkit2gtk3-jsc 2.50.4-1.el9_6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23974
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3 2.50.4-1.el8_4, webkit2gtk3-jsc 2.50.4-1.el8_4
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23967
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3 2.50.4-1.el8_6, webkit2gtk3-jsc 2.50.4-1.el8_6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23968
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3 2.50.4-1.el8_8, webkit2gtk3-jsc 2.50.4-1.el8_8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23973
  • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.50.4-2.el7_9, webkitgtk4-jsc 2.50.4-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.50.4-2.el7_9, webkitgtk4-devel 2.50.4-2.el7_9, webkitgtk4-debuginfo 2.50.4-2.el7_9, webkitgtk4-jsc-devel 2.50.4-2.el7_9
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2025:23975

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
10 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

Affected products

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

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

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.