CVE-2019-8803
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 · uneditedAn authentication issue was addressed with improved state management. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1, tvOS 13.2, watchOS 6.1. A local attacker may be able to login to the account of a previously logged in user without valid credentials..
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 confidenceA local authentication bypass vulnerability in Apple's iOS, iPadOS, macOS, tvOS, and watchOS allowed an attacker to login to an account of a previously logged in user without valid credentials, caused by improper session state management that failed to properly invalidate or clear prior user authentication states.
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< 13.2< 13.2< 10.15.1< 13.2< 6.1CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device type and operating systemDetermine whether the device runs iOS, iPadOS, macOS, tvOS, or watchOS. For iOS/iPadOS, go to Settings > General > About. For macOS, use System Preferences > About or run 'sw_vers' in Terminal. For tvOS, go to Settings > General > About. For watchOS, open the Watch app on paired iPhone and go to General > About.Affected if Any Apple device running an affected OS version (see version checks below)
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Check iOS or iPadOS versionOn iOS/iPadOS, view the version number in Settings > General > About (look for 'Version' field). Compare it against the affected range: any version lower than 13.2.Affected if The version shown is less than 13.2 (for example, 13.1.3, 13.1, 13.0, 12.x)
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Check macOS versionOn macOS, view the release version in System Preferences > About (look for 'macOS' or 'Version' field). Alternatively, run 'sw_vers -productVersion' in Terminal. Compare it against the affected range: any version lower than 10.15.1.Affected if The version shown is less than 10.15.1 (for example, 10.15.0, 10.14.x, 10.13.x)
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Check tvOS versionOn Apple TV, go to Settings > General > About and view the version number. Compare it against the affected range: any version lower than 13.2.Affected if The version shown is less than 13.2
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Check watchOS versionOpen the Watch app on the paired iPhone, go to General > About, and view the watchOS version. Alternatively, on the Apple Watch go to Settings > General > About. Compare against the affected range: any version lower than 6.1.Affected if The version shown is less than 6.1
The device is affected if it is running any version of iOS, iPadOS, tvOS, or watchOS prior to 13.2, or macOS prior to 10.15.1, and if the device had a previously authenticated user session that was not properly cleared.
Generated from the published advisory. Verify against your own configuration.
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 data6.110.15.113.2
Apply the vendor-supplied patches: update iOS devices to 13.2+, macOS to 10.15.1+, tvOS to 13.2+, and watchOS to 6.1+ to address the authentication state management flaw.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8803 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-8803 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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