Home/CVE/This issue was addressed with improved checks. This issue is fixed in tvOS 17, iOS 17 and iPadOS 17, watchOS 10, macOS S
CVE

CVE-2023-40400

This issue was addressed with improved checks. This issue is fixed in tvOS 17, iOS 17 and iPadOS 17, watchOS 10, macOS S

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.

CRITICAL · CVSS 9.8 EPSS 0.01587
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
▤

Affected Products & Versions

5
apple ipados< 16.6
apple iphone os< 16.6
apple macos< 14.0
apple tvos< 17.0
apple watchos< 10.0
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighRemote Access Tool - Renamed MeshAgent Execution - MacOS
producthighBinary Padding - MacOS
productmediumSuspicious Execution via macOS Script Editor
productmediumSystem Information Discovery Via Sysctl - MacOS
productmediumNew File Exclusion Added To Time Machine Via Tmutil - MacOS
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · product-security@apple.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Sep 2023 · 03:19 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

8
siemens-csafSSA-089022
suse-csafSUSE-SU-2026:20064-1
suse-csafSUSE-SU-2025:20059-1
suse-csafSUSE-SU-2024:3516-1
suse-csafSUSE-SU-2024:3355-1
🔗

References & Sources

13
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2023/Oct/10Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/3Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/8Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/9Mailing ListThird Party Advisory
https://support.apple.com/en-us/HT213936Release NotesVendor Advisory
https://support.apple.com/en-us/HT213937Release NotesVendor Advisory
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