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Iphone OsOperating system · Apple

CVE-2016-1722

HIGH · 7.8 CVSS v3.0 Published 2016-02-01
Fix available
A fix is available. Upgrade to 2.2 / 9.1.1 or later.
See remediation →
80/100
Remediation priority · High
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
syslog in Apple iOS before 9.2.1, OS X before 10.11.3, and tvOS before 9.1.1 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

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 · moderate confidence

Local privilege escalation vulnerability in Apple's syslog component affecting iOS, OS X, and tvOS. Allows local authenticated users to potentially gain elevated privileges or trigger memory corruption via unspecified vectors.

MitigationApply vendor patches: upgrade to iOS 9.2.1+, OS X 10.11.3+, or tvOS 9.1.1+ as appropriate for the affected platform.

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:< 9.2.1
Mac Os XOperating system
Affected:< 10.11.3
TvosOperating system
Affected:< 9.1.1
WatchosOperating system
Affected:< 2.2

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/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 platform and OS version
    On macOS: run 'sw_vers' in Terminal or check System Preferences > About. On iOS: go to Settings > General > About. On tvOS: go to Settings > General > About. On watchOS: open the Watch app on paired iPhone, go to My Watch > About.
    Affected if Version is iOS below 9.2.1, macOS (OS X) below 10.11.3, tvOS below 9.1.1, or watchOS below 2.2
  2. Compare installed version to affected ranges
    Match your identified version number against: iOS 9.2.1+, OS X 10.11.3+, tvOS 9.1.1+, watchOS 2.2+ are fixed versions. Any version lower than these thresholds is affected.
    Affected if Installed version falls below the minimum fixed version for your platform
  3. Check for local authenticated user access
    This vulnerability requires a local authenticated user account. Verify if standard user accounts exist on the system besides administrative accounts.
    Affected if Local user accounts exist and the system is running an affected OS version

You are affected if your device runs an OS version below the fixed releases (iOS 9.2.1, OS X 10.11.3, tvOS 9.1.1, or watchOS 2.2) and has local user accounts.

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.

From vendor data
Upgrade available Upgrade to 2.2 / 9.1.1 / 9.2.1 or later
Fixed in 2.29.1.19.2.1
Interim mitigation

Apply vendor patches: upgrade to iOS 9.2.1+, OS X 10.11.3+, or tvOS 9.1.1+ as appropriate for the affected platform.

Fix this in Iphone Os Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

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Scan for this in your stack

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dbcve dependency scanner

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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-2016-1722 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