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Fencer Vulns
medium 5.5

CVE-2024-27834 kev in the critical feed json

The issue was addressed with improved checks.

published 2024-05-13 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-25027

cvss
5.5
version 3.1, CNA
cisa kev
Exploited
added 2026-11-04
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

The issue was addressed with improved checks. This issue is fixed in Safari 17.5, iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 17.5, watchOS 10.5. An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication.

Patch / fix

cisa required action Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

  • Apple Safari 17.5
  • Apple iOS and iPadOS 16.7.8, 17.5
  • Apple macOS 14.5
  • Apple tvOS 17.5
  • Apple watchOS 10.5
  • wpewebkit Debian 14, Debian 13 2.44.2-1
  • webkit2gtk Debian 12 2.44.2-1~deb12u1
  • webkit2gtk Debian 14, Debian 13 2.44.2-1

debian advisories DEBIAN-CVE-2024-27834

  • webkit2gtk Ubuntu 22.04 LTS 2.44.2-0ubuntu0.22.04.1
  • webkit2gtk Ubuntu 24.04 LTS 2.44.2-0ubuntu0.24.04.1

ubuntu advisories UBUNTU-CVE-2024-27834

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 2.46.3-1.el8_10
  • webkit2gtk3-jsc RHEL 8 2.46.3-1.el8_10
  • webkit2gtk3 RHEL 9 2.38.5-1.el9_2.3
  • webkit2gtk3-jsc RHEL 9 2.38.5-1.el9_2.3
  • webkit2gtk3 RHEL 8 2.38.5-1.el8_8.5
  • webkit2gtk3-jsc RHEL 8 2.38.5-1.el8_8.5
  • 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-2024:9636RHSA-2023:4201RHSA-2023:4202

  • webkit2gtk3 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Desktop Applications 15 SP5 +2 more 2.46.0-150400.4.91.1
  • webkit2gtk4 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 2.46.0-150400.4.91.1
  • webkit2gtk3-soup2 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Basesystem 15 SP5 +2 more 2.46.0-150400.4.91.1
  • webkit2gtk3 SLE Module for Desktop Applications 15 SP6, openSUSE Leap 15.6 2.46.0-150600.12.12.1
  • webkit2gtk4 SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.46.0-150600.12.12.1
  • webkit2gtk3-soup2 SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.46.0-150600.12.12.1
  • webkit2gtk3 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Desktop Applications 15 SP5 +3 more 2.44.2-150400.4.83.2
  • webkit2gtk4 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Development Tools 15 SP5 +3 more 2.44.2-150400.4.83.2

suse advisories SUSE-SU-2024:3870-1SUSE-SU-2024:3869-1SUSE-SU-2024:3752-1SUSE-SU-2024:3751-1SUSE-SU-2024:2065-1SUSE-SU-2024:2043-1

  • webkit2gtk3 AlmaLinux 8 2.46.3-1.el8_10
  • webkit2gtk3-jsc AlmaLinux 8 2.46.3-1.el8_10

almalinux advisories ALSA-2024:9636

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-2024-27834 updated cvss 8.8

webkit: pointer authentication bypass

  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.46.3-1.el8_10, webkit2gtk3 2.38.5-1.el8_8.5, webkit2gtk3-jsc 2.46.3-1.el8_10, webkit2gtk3-jsc 2.38.5-1.el8_8.5
    fixed: vendor fix RHSA-2024:9636
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.38.5-1.el9_2.3, webkit2gtk3-jsc 2.38.5-1.el9_2.3
    fixed: vendor fix RHSA-2023:4201
  • 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 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. Published
  2. CISA SSVC: exploitation active
  3. Added to CISA KEV
  4. CISA patch deadline

Known exploited

Added
5 d ago
Patch by
2026-11-18 (in 8 d)
Ransomware
Not known
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor, product
Apple, Multiple Products
CISA name
Apple Multiple Products Improper Authentication Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
partial
Assessed
5 d ago

Exploit prediction

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Apple Safari
  • Apple iOS and iPadOS
  • Apple macOS
  • Apple tvOS
  • 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.