dbcve.org
IpadosOperating system · Apple

CVE-2023-27940

MEDIUM · 6.3 CVSS v3.1 Published 2023-06-23
Fix available
A fix is available. Upgrade to 12.6.6 / 13.4 or later.
See remediation →
66/100
Remediation priority · Elevated
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
The issue was addressed with additional permissions checks. This issue is fixed in iOS 15.7.6 and iPadOS 15.7.6, macOS Monterey 12.6.6, macOS Ventura 13.4. A sandboxed app may be able to observe system-wide network connections.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A sandboxed application could bypass intended sandbox restrictions to observe system-wide network connections. The vulnerability allowed a malicious sandboxed app to potentially capture network traffic that should have been isolated to its own sandbox. This was addressed by implementing additional permissions checks in the affected Apple operating systems.

MitigationApply the vendor-supplied updates: iOS 15.7.6 or later, iPadOS 15.7.6 or later, macOS Monterey 12.6.6 or later, or macOS Ventura 13.4 or later.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IpadosOperating system
Affected:< 15.7.6
Iphone OsOperating system
Affected:< 15.7.6
macOSOperating system
Affected:>= 12.0.0, < 12.6.6>= 13.0, < 13.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify operating system type
    On iOS or iPadOS: go to Settings > General > About and note the model and OS. On macOS: click Apple menu > About This Mac and note the macOS version name (Monterey or Ventura).
    Affected if Any iPhone, iPad, or Mac running the affected operating systems listed below
  2. Check iOS or iPadOS version
    On iOS/iPadOS: Settings > General > About > Version displays the installed version (for example, 15.5 or 15.7.5).
    Affected if iOS or iPadOS version is below 15.7.6 (such as 15.7.5, 15.6, 15.5, etc.)
  3. Check macOS Monterey version
    Run 'sw_vers' in Terminal or check About This Mac. The version will show as something like 12.5 or 12.6.5.
    Affected if macOS Monterey version is 12.0.0 through 12.6.5 (versions below 12.6.6)
  4. Check macOS Ventura version
    Run 'sw_vers' in Terminal or check About This Mac. The version will show as something like 13.0 or 13.3.
    Affected if macOS Ventura version is 13.0 through 13.3 (versions below 13.4)

Your environment is affected if running iOS or iPadOS below 15.7.6, or macOS Monterey below 12.6.6, or macOS Ventura below 13.4.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 12.6.6 / 13.4 / 15.7.6 or later
Fixed in 12.6.613.415.7.6
Interim mitigation

Apply the vendor-supplied updates: iOS 15.7.6 or later, iPadOS 15.7.6 or later, macOS Monterey 12.6.6 or later, or macOS Ventura 13.4 or later.

Recommended fix High confidence

iOS 15.7.6 / iPadOS 15.7.6 / macOS Monterey 12.6.6 / macOS Ventura 13.4

  1. Back up your device before upgrading to preserve data
  2. For iOS/iPadOS: Open Settings > General > Software Update, then download and install iOS 15.7.6 or iPadOS 15.7.6
  3. For macOS Monterey: Open System Preferences > Software Update, then download and install macOS Monterey 12.6.6
  4. For macOS Ventura: Open System Settings > General > Software Update, then download and install macOS Ventura 13.4
  5. Restart the device if prompted to complete the installation
Caveat Standard OS upgrades may cause compatibility issues with older apps; backup recommended before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ipados Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-27940 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data