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CVE-2023-32373

72
FAUCET Score

CVE-2023-32373 is a critical use-after-free vulnerability affecting Apple's WebKit, present across watchOS, tvOS, macOS, iOS, iPadOS, and Safari, as well as WebKitGTK and Red Hat products. This flaw allows for arbitrary code execution when processing maliciously crafted web content. With a CVSS score of 8.8 (HIGH) and a FAUCET Risk Score of 98/100, it poses a significant threat due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Apple has confirmed active exploitation of this zero-day vulnerability, with numerous media reports highlighting its use in "extremely sophisticated" attacks, despite no public exploit code being available on platforms like Metasploit or ExploitDB. The vulnerability has garnered substantial community discussion, indicating widespread awareness and concern.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.5CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 15.7.6CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
>= 16.0, < 16.5CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
>= 15.0, < 15.7.6CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 16.0, < 16.5CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
12.17%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · May 22, 2023
This CVE's current EPSS score of 0.1217 is in the 96th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: webkitgtk4-0:2.48.3-2.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: webkit2gtk3-0:2.38.5-1.el8_8.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: webkit2gtk3-0:2.38.5-1.el9_2.2
View patch
applevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: webkitgtk3

Vendor Advisories (1)

redhatCVE-2023-32373Important

webkitgtk: a use-after-free when processing maliciously crafted web content

May 22, 2023

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
security.gentoo.org / glsa/202401-04
Third Party Advisory
support.apple.com / en-us/HT213757
Release NotesVendor Advisory
support.apple.com / en-us/HT213758
Release NotesVendor Advisory
support.apple.com / en-us/HT213761
Release NotesVendor Advisory
support.apple.com / en-us/HT213762
Release NotesVendor Advisory
support.apple.com / en-us/HT213764
Release NotesVendor Advisory
support.apple.com / en-us/HT213765
Release NotesVendor Advisory