CVE-2023-21027
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 · uneditedIn multiple functions of PasspointXmlUtils.java, there is a possible authentication misconfiguration due to a logic error in the code. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-216854451
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 confidenceA logic error in multiple functions of PasspointXmlUtils.java creates an authentication misconfiguration that allows remote information disclosure on Android-13 without requiring any privileges or user interaction.
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= 13.0CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 checksWork through these to decide whether this CVE applies to you.
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Verify Android version is 13.0Go to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The version shows anything other than exactly 13.0 (versions before or after 13.0 are not affected)
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Check if Passpoint is configuredNavigate to Settings > Network & Internet > Wi-Fi > Wi-Fi preferences > Advanced > Passpoint, or inspect /data/misc/wifi/wpa_supplicant.conf for Passpoint-related entriesAffected if Passpoint profiles or configurations exist on the device, indicating the vulnerable XML parsing code path could be triggered
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Identify Passpoint XML profile filesSearch for Passpoint-related XML configuration files in /data/misc/wifi/ or /wifi/ directories using 'find /data -name *passpoint*.xml' via ADB shellAffected if Any Passpoint XML profile files are present on the device, which would be processed by the vulnerable PasspointXmlUtils.java functions
A device is affected only if it is running Android 13.0 and has Passpoint profiles or configurations configured, as the vulnerability in PasspointXmlUtils.java is triggered during Passpoint XML profile parsing.
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.
dbcve · scopedApply the Android-13 security patch (Android ID A-216854451) to address the logic error in PasspointXmlUtils.java that causes the authentication misconfiguration.
Latest Android 13 security patch level (contact device manufacturer for specific build numbers)
- Check for system updates on the Android device by going to Settings > System > Software Update
- Ensure the device is updated to the latest Android security patch level available from the device manufacturer
- If no update is available, contact the device manufacturer or carrier for the security patch release schedule
- For enterprise-managed devices, ensure the device management policy enforces regular security updates
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-21027 — 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-2023-21027 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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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.
- 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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