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Iphone OsOperating system · Apple

CVE-2017-7108

CRITICAL · 9.8 CVSS v3.0 Published 2017-10-23
Fix available
A fix is available. Upgrade to after 10.3.3 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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
An issue was discovered in certain Apple products. iOS before 11 is affected. tvOS before 11 is affected. watchOS before 4 is affected. The issue involves the "Wi-Fi" component. It might allow remote attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via crafted Wi-Fi traffic.

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 memory corruption vulnerability in the Wi-Fi component of iOS, tvOS, and watchOS allows remote attackers to execute arbitrary code via crafted Wi-Fi traffic. The flaw exists in the Wi-Fi stack's handling of maliciously crafted network packets, potentially giving attackers privileged code execution or causing denial of service.

MitigationUpdate all affected iOS, tvOS, and watchOS devices to version 11 or later. For devices that cannot be updated, consider network segmentation to limit Wi-Fi attack surface and monitor for unusual Wi-Fi activity.

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
Iphone OsOperating system
Affected:<= 10.3.3
TvosOperating system
Affected:<= 10.2.2
WatchosOperating system
Affected:<= 3.2.3

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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 the device type
    Determine whether the device is an iPhone/iPad (iOS), Apple TV (tvOS), or Apple Watch (watchOS). This determines which version range applies.
    Affected if Device is an iPhone, iPad, Apple TV, or Apple Watch running the affected operating systems.
  2. Check iOS version on iPhone or iPad
    On the device, go to Settings > General > About and note the Version number. Compare this to the affected range of 10.3.3 and below.
    Affected if The iOS version is 10.3.3 or lower.
  3. Check tvOS version on Apple TV
    On Apple TV, go to Settings > General > About > Version. Compare this to the affected range of 10.2.2 and below.
    Affected if The tvOS version is 10.2.2 or lower.
  4. Check watchOS version on Apple Watch
    On Apple Watch, open the Watch app on paired iPhone, go to General > About, and note the watchOS version. Compare to affected range of 3.2.3 and below.
    Affected if The watchOS version is 3.2.3 or lower.
  5. Confirm Wi-Fi is enabled
    Check if Wi-Fi is turned on in the device settings. The vulnerability is triggered via crafted Wi-Fi network traffic.
    Affected if Wi-Fi is enabled on a device running an affected OS version.

A device is affected if it runs iOS 10.3.3 or lower, tvOS 10.2.2 or lower, or watchOS 3.2.3 or lower, and has Wi-Fi functionality enabled.

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 a release after 10.3.3
Interim mitigation

Update all affected iOS, tvOS, and watchOS devices to version 11 or later. For devices that cannot be updated, consider network segmentation to limit Wi-Fi attack surface and monitor for unusual Wi-Fi activity.

Recommended fix High confidence

iOS 11+, tvOS 11+, watchOS 4+

  1. Back up your iPhone, iPad, or iPod touch before upgrading
  2. Connect your device to power and Wi-Fi
  3. Go to Settings > General > Software Update
  4. If iOS 11 or later is available, tap Download and Install
  5. For Apple Watch, pair with iPhone and open Watch app > General > Software Update > Download and Install watchOS 4 or later
  6. For Apple TV, go to Settings > System > Software Updates > Update Software > Download and Install tvOS 11 or later
  7. Ensure the device remains connected to power until the update completes
Caveat Upgrading from iOS 10 to iOS 11 may cause compatibility issues with older apps that do not support iOS 11; some legacy features were deprecated

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

Fix this in Iphone Os Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2017-7108 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