HOME VULNERABILITIESCVE-2023-40400

CRITICAL

CVE-2023-40400

NVD-CWE-noinfoPublished: September 27, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

This issue was addressed with improved checks. This issue is fixed in tvOS 17, iOS 17 and iPadOS 17, watchOS 10, macOS Sonoma 14. A remote user may cause an unexpected app termination or arbitrary code execution.

Risk Analysis

A vulnerability across multiple Apple operating systems allows a remote user to cause an application to terminate unexpectedly or execute arbitrary code. This is a critical risk due to the potential for remote code execution.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Update to the latest versions of tvOS 17, iOS 17, iPadOS 17, watchOS 10, or macOS Sonoma 14.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-40400 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Apple5 product(s)

ipadosiphone osmacostvoswatchos

Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/10

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/3

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/8

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/9

ADVISORYhttps://support.apple.com/en-us/HT213936

ADVISORYhttps://support.apple.com/en-us/HT213937

ADVISORYhttps://support.apple.com/en-us/HT213938

ADVISORYhttps://support.apple.com/en-us/HT213940

ADVISORYhttps://support.apple.com/kb/HT213841

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/10

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/3

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/8

ADVISORYhttp://seclists.org/fulldisclosure/2023/Oct/9

ADVISORYhttps://support.apple.com/en-us/HT213936

ADVISORYhttps://support.apple.com/en-us/HT213937

ADVISORYhttps://support.apple.com/en-us/HT213938

ADVISORYhttps://support.apple.com/en-us/HT213940

ADVISORYhttps://support.apple.com/kb/HT213841

All References (22)

→

http://seclists.org/fulldisclosure/2023/Oct/10Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/3Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/8Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/9Mailing List · Third Party Advisory

→

https://support.apple.com/en-us/HT213936Release Notes · Vendor Advisory

→

https://support.apple.com/en-us/HT213937Release Notes · Vendor Advisory

→

https://support.apple.com/en-us/HT213938Release Notes · Vendor Advisory

→

https://support.apple.com/en-us/HT213940Release Notes · Vendor Advisory

→

https://support.apple.com/kb/HT213841Release Notes · Vendor Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/10Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/3Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/8Mailing List · Third Party Advisory

→

http://seclists.org/fulldisclosure/2023/Oct/9Mailing List · Third Party Advisory

→

https://support.apple.com/en-us/HT213936Release Notes · Vendor Advisory

→

https://support.apple.com/en-us/HT213937Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2023-40400

CVSS Score9.8 / 10

SeverityCRITICAL

WeaknessNVD-CWE-noinfo

CISA KEVNo

Affected1 vendor(s)

PublishedSep 27, 2023

Related CVEs (NVD-CWE-noinfo)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2023-40400 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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