CVE-2023-40414

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 10, iOS 17 and iPadOS 17, tvOS 17, macOS Sonoma 14, Safari 17. Processing web content may lead to arbitrary code execution.

Published: 2024-01-10 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-40414 is rated Moderate Risk (60.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.04%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2023-40414

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 2026-06-15 0.15% 1.04% +0.89%
2 2026-01-30 0.25% 0.15% -0.10%
3 2025-11-21 — 0.25% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-40414

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-40414

OS Trackers for CVE-2023-40414

vendor priority summary link
debian not yet assigned CVE-2023-40414 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-2023-40414
gentoo high CVE-2023-40414: 1 GLSA(s) (202407-13), 1 atom(s) (net-libs/webkit-gtk); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-40414
redhat high — https://access.redhat.com/security/cve/CVE-2023-40414
suse high CVE-2023-40414 severity important: SUSE including 132 source package names (WebKitGTK-4.0-lang-2.42.5-150400.4.75.1, WebKitGTK-4.0-lang-2.42.5-150600.10.35, …), 380 product×package rows across 45 product lines (SUSE Enterprise Storage 7.1, SUSE Liberty Linux 8, … (45 product lines)): Fixed 341, Known Not Affected 39. https://www.suse.com/security/cve/CVE-2023-40414/
ubuntu medium CVE-2023-40414 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 40 status rows across 8 suites (bionic, focal, jammy, mantic, noble, trusty, upstream, xenial): ignored 19, DNE 14, released 3, needs-triage 2, not-affected 2. https://ubuntu.com/security/CVE-2023-40414

Affected software / configurations for CVE-2023-40414

Vendor Product Version Raw CPE
apple safari < 17.0 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 17.0 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 17.0 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos < 14.0 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos < 17.0 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos < 10.0 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

References for CVE-2023-40414

cvelogic Threat Intelligence