CVE-2019-20782
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 issue was discovered on LG mobile devices with Android OS 7.0, 7.1, 7.2, 8.0, and 8.1 software. LG Advanced Flash (LAF) has a buffer overflow. The LG ID is LVE-SMP-190001 (March 2019).
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 buffer overflow vulnerability exists in LG Advanced Flash (LAF), a factory flash utility present on LG mobile devices running Android OS 7.0 through 8.1. The overflow likely allows execution of arbitrary code or privilege escalation due to improper bounds checking when handling flash operations.
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= 7.0= 7.1= 7.2= 8.0= 8.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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 checksWork through these to decide whether this CVE applies to you.
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Verify Android version on the LG deviceGo to Settings > About Phone > Software Info and check the Android version. Alternatively, run `getprop ro.build.version.release` via ADB shell or check the /system/build.prop file.Affected if The Android version is 7.0, 7.1, 7.2, 8.0, or 8.1 (exact version matches listed in affected range)
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Confirm the device is an LG mobile deviceCheck the device model by going to Settings > About Phone > Model number, or run `getprop ro.product.manufacturer` and `getprop ro.product.model` via ADB shell.Affected if The device is an LG phone or tablet running the affected Android versions
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Determine if LAF (LG Advanced Flash) mode is accessibleLAF mode is typically accessed by powering off the device and holding a specific hardware key combination (often Volume Down + Power), or through developer options. Check if the device allows access to LAF/factory flash mode.Affected if LAF mode can be entered on the device - this is the vulnerable component
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Check USB debugging statusGo to Settings > Developer Options > USB Debugging. If Developer Options is hidden, enable it by tapping Build Number in About Phone 7 times, then check the setting.Affected if USB debugging is enabled - this increases the attack surface for exploiting the LAF vulnerability
A user is affected if they own an LG mobile device running Android 7.0 through 8.1 with LAF flash utility accessible, particularly if USB debugging is enabled.
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 dataApply vendor-supplied firmware/security patches from LG. Until patches are available, restrict access to LAF mode and disable USB debugging to reduce attack surface.
- Consultation8.0 h
- Implementation4.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,320.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-20782 — 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-2019-20782 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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