CVE-2023-28204

Exp

An out-of-bounds read was addressed with improved input validation. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

Published: 2023-06-23 Last update: 2025-10-23 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-28204 is rated Active Exploitation (70/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). CISA KEV confirms active exploitation (added 2023-05-22) affecting Apple / Multiple Products. a weakness (CWE-125) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2023-28204

Name: Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability · CISA KEV detail

Exploit added: 2023-05-22

Action due: 2023-06-12

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2023-28204

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-01 0.05% 0.07% +0.02%
2 2026-02-26 0.09% 0.05% -0.04%
3 2026-01-17 — 0.09% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-28204

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-28204

OS Trackers for CVE-2023-28204

vendor priority summary link
debian not yet assigned CVE-2023-28204 not yet assigned priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 8, open 2. https://security-tracker.debian.org/tracker/CVE-2023-28204
gentoo high CVE-2023-28204: 1 GLSA(s) (202401-04), 1 atom(s) (net-libs/webkit-gtk); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-28204
redhat medium — https://access.redhat.com/security/cve/CVE-2023-28204
ubuntu medium CVE-2023-28204 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 50 status rows across 10 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): ignored 23, DNE 19, needs-triage 3, released 3, not-affected 2. https://ubuntu.com/security/CVE-2023-28204

Affected software / configurations for CVE-2023-28204

Vendor Product Version Raw CPE
apple safari < 16.5 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 15.7.6 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 16.0, < 16.5 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 15.7.6 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 16.0, < 16.5 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos >= 13.0, < 13.4 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos < 16.5 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos < 9.5 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
webkitgtk webkitgtk\+ < 2.42.3 cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:*

References for CVE-2023-28204

cvelogic Threat Intelligence