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CVE-2023-42916· NVD / CVE Program· CNA apple

An out-of-bounds read was addressed with improved input validation.

Noroxi assessment

Priority: This week (action score 61/100)

  • CISA has confirmed exploitation in the wild (Dec 4, 2023). Remediation deadline for US federal agencies: Dec 25, 2023.
  • Probability of exploitation in the next 30 days: 17.8% (FIRST EPSS); higher than 97.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: webkit2gtk (Debian:11) 2.42.3-1~deb11u1; webkit2gtk (Debian:12) 2.42.3-1~deb12u1; webkit2gtk (Debian:13) 2.42.3-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Don’t wait for the next maintenance window. Upgrade to webkit2gtk (Debian:11) 2.42.3-1~deb11u1; webkit2gtk (Debian:12) 2.42.3-1~deb12u1; webkit2gtk (Debian:13) 2.42.3-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

MediumCVSS 6.5 · v3.1KEVWeaponized Fix available
Published
Nov 30, 2023
Updated
Jun 17, 2026
EPSS
17.8% · 97th percentile

Report tools

JSON

Action score

61

This week

Don’t wait for the next maintenance window.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
30 / 30 · Listed
EPSS
5 / 30 · 17.8%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Dec 4, 2023. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Dec 25, 2023.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-42916

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
applesafari
appleipados
appleiphone os
applemacos
fedoraprojectfedora
debiandebian linux
webkitgtkwebkitgtk\+

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple ipados17.0 and later · before 17.1.2
  • apple ipadosbefore 15.8.1
  • apple ipados16.0 and later · before 16.7.3
  • apple iphone osbefore 15.8.1
  • apple iphone os16.0 and later · before 16.7.3
  • apple iphone os17.0 and later · before 17.1.2
  • apple macos14.0 and later · before 14.1.2
  • apple safaribefore 17.1.2
  • debian debian linux11.0
  • debian debian linux12.0
  • fedoraproject fedora38
  • fedoraproject fedora39
  • webkitgtk webkitgtk+before 2.42.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apple). Independent of NVD's CPE analysis and usually ahead of it.

  • Apple iOS and iPadOS

    • unspecified and later · before 17.1affected

  • Apple macOS

    • unspecified and later · before 14.1affected

  • Apple Safari

    • unspecified and later · before 17.1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11webkit2gtkbefore 2.42.3-1~deb11u12.42.3-1~deb11u1
Debian:12webkit2gtkbefore 2.42.3-1~deb12u12.42.3-1~deb12u1
Debian:12wpewebkitfrom 0—
Debian:13webkit2gtkbefore 2.42.3-12.42.3-1
Debian:13wpewebkitbefore 2.42.3-12.42.3-1
openSUSE:Leap 15.4webkit2gtk3before 2.42.3-150400.4.67.12.42.3-150400.4.67.1
openSUSE:Leap 15.4webkit2gtk3-soup2before 2.42.3-150400.4.67.12.42.3-150400.4.67.1
openSUSE:Leap 15.4webkit2gtk4before 2.42.3-150400.4.67.12.42.3-150400.4.67.1
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3before 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-debuginfobefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-debugsourcebefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-develbefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-devel-debuginfobefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-jscbefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-jsc-debuginfobefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-jsc-develbefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:8::appstreamwebkit2gtk3-jsc-devel-debuginfobefore 0:2.38.5-1.el8_8.50:2.38.5-1.el8_8.5
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3before 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-debuginfobefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-debugsourcebefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-develbefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-devel-debuginfobefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-jscbefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3
Red Hat:enterprise_linux:9::appstreamwebkit2gtk3-jsc-debuginfobefore 0:2.38.5-1.el9_2.30:2.38.5-1.el9_2.3

+8

Same product

apple: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-28205A use after free issue was addressed with improved memory management.KEV
    73This week
  • CVE-2023-32439A type confusion issue was addressed with improved checks.KEV
    72This week
  • CVE-2023-32435A memory corruption issue was addressed with improved state management.KEV
    72This week

Published before and after this one in the same product

  • ← EarlierCVE-2023-41983Oct 25, 2023 · The issue was addressed with improved memory handling.
    26Monitor
  • ← EarlierCVE-2023-42852Oct 25, 2023 · A logic issue was addressed with improved checks.
    36Monitor
  • Later →CVE-2023-42917Nov 30, 2023 · A memory corruption vulnerability was addressed with improved locking.KEV
    68This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:webkit2gtk2.42.3-1~deb12u1 · Debian:12Package registry (OSV)
debian:wpewebkit2.42.3-1 · Debian:13Package registry (OSV)
opensuse:webkit2gtk32.42.3-150400.4.67.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:webkit2gtk3-soup22.42.3-150400.4.67.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:webkit2gtk42.42.3-150400.4.67.1 · openSUSE:Leap 15.4Package registry (OSV)
red hat:webkit2gtk30:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-debuginfo0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-debugsource0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-devel0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-devel-debuginfo0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-jsc0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-jsc-debuginfo0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-jsc-devel0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:webkit2gtk3-jsc-devel-debuginfo0:2.38.5-1.el9_2.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
suse:webkit2gtk32.42.3-150200.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSPackage registry (OSV)
suse:webkit2gtk32.42.3-150400.4.67.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP4Package registry (OSV)
suse:webkit2gtk3-soup22.42.3-150400.4.67.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4Package registry (OSV)
suse:webkit2gtk42.42.3-150400.4.67.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP4Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. CISA KEV+3 d
  3. TodayOct 24, 2026+1058 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-28204160 days apartAn out-of-bounds read was addressed with improved input validation.KEV
    60This week
  • CVE-2022-32912436 days apartAn out-of-bounds read was addressed with improved bounds checking.
    35Monitor
  • CVE-2024-54502377 days apartThe issue was addressed with improved checks.
    31Monitor
  • CVE-2024-54508377 days apartThe issue was addressed with improved memory handling.
    30Monitor
  • CVE-2023-32402160 days apartAn out-of-bounds read was addressed with improved input validation.
    26Monitor
  • CVE-2024-40789242 days apartAn out-of-bounds access issue was addressed with improved bounds checking.
    26Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (18 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records