CVE-2023-43000

Exp

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

Published: 2025-11-05 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-43000 is rated Critical Active Threat (91.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.90%). CISA KEV confirms active exploitation (added 2026-03-05) affecting Apple / Multiple Products. a weakness (CWE-416) 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-2023-43000

Name: Apple Multiple products Use-After-Free Vulnerability · CISA KEV detail

Exploit added: 2026-03-05

Action due: 2026-03-26

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public exploit references (Exploit-DB) for CVE-2023-43000

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-43000

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 2026-06-24 3.82% 3.90% +0.08%
2 2026-06-15 0.02% 3.82% +3.80%
3 2026-04-21 — 0.02% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-43000

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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: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: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.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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: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: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.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-43000

OS Trackers for CVE-2023-43000

vendor priority summary link
debian not yet assigned CVE-2023-43000 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-2023-43000
redhat high — https://access.redhat.com/security/cve/CVE-2023-43000
suse high CVE-2023-43000 severity important: SUSE including 121 source package names (2.2.0-4.55:gpg2-2.4.4-slfo.1.1_2.1, 2.2.1-7.2:gpg2-2.4.4-slfo.1.1_2.1, …), 570 product×package rows across 80 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (80 product lines)): Fixed 481, Known Not Affected 71, First Fixed 18. https://www.suse.com/security/cve/CVE-2023-43000/
ubuntu medium CVE-2023-43000 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 36 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): ignored 14, DNE 13, needs-triage 4, not-affected 3, released 2. https://ubuntu.com/security/CVE-2023-43000

Affected software / configurations for CVE-2023-43000

Vendor Product Version Raw CPE
apple safari < 16.6 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 15.8.7 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 16.0, < 16.6 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 15.8.7 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 16.0, < 16.6 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos < 13.5 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

References for CVE-2023-43000

cvelogic Threat Intelligence