vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-43000

HIGH
8.8
CVSS Score
Published: November 5, 2025 at 06:33 PM UTC
Updated: October 28, 2026 at 07:10 PM UTC
4 products affected across 1 vendormacOSiPhone OSiPadOS

Using macOS by Apple?

Get instant alerts when new vulnerabilities affect macOS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 4%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score4.0%

EPSS (Exploit Prediction Scoring System) estimates a 4.0% chance this CVE is exploited in the wild within the next 30 days — higher than 91% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Apple macOS, iOS, iPadOS, and Safari 16.6 contain a use-after-free vulnerability due to the processing of maliciously crafted web content that may lead to memory corruption.

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.
Ransomware Use
Unknown
Added to KEV
Mar 5, 2026
Remediation Due
Mar 26, 2026
220 days overdue
Notes
https://support.apple.com/en-us/120324
https://support.apple.com/en-us/120331
https://support.apple.com/en-us/120338
https://nvd.nist.gov/vuln/detail/CVE-2023-43000

Description

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. Processing maliciously crafted web content may lead to memory corruption.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 15.8.716.0 ≤ v < 16.6
Affected range stops below 15.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.6, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 15.8.716.0 ≤ v < 16.6
Affected range stops below 15.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.6, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 13.5
Affected range stops below 13.5, so it looks safe — our inference, not a vendor statement
Safari· Apple
95%
v < 16.6
Affected range stops below 16.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/120331
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/120338
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/120324
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/126632
ExploitThird Party Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card