CVE-2022-22820
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 · uneditedDue to the lack of media file checks before rendering, it was possible for an attacker to cause abnormal CPU consumption for message recipient by sending specially crafted gif image in LINE for Windows before 7.4.
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 confidenceThis vulnerability exists in LINE for Windows versions before 7.4. The application lacks proper validation checks on media files before rendering them, allowing an attacker to send a specially crafted GIF image that causes abnormal CPU consumption (denial of service) on the recipient's system when the image is rendered.
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< 7.4.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 installed LINE for Windows versionOpen LINE application, click on the LINE icon (gear icon) > Settings > About LINE, or right-click the LINE executable in Program Files and view Properties > Details to find the version numberAffected if version displayed is lower than 7.4.0 (e.g., 7.3.0, 7.2.0, etc.)
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Confirm LINE is actively used for image receptionVerify that the LINE client is configured to automatically load and display images in chat conversations, or that images have been received in chat historyAffected if LINE automatically renders incoming media files in chat windows (this is the default behavior)
A user is affected if LINE for Windows is installed with a version number less than 7.4.0 and the application is used to receive or view images, as the vulnerability triggers upon rendering a specially crafted GIF.
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 · scoped7.4.0
Update LINE for Windows to version 7.4 or later, which includes proper media file validation checks before rendering.
7.4.0 or later
- Open LINE for Windows application
- Check current version by clicking on the settings menu (three dots) > About LINE
- If version is below 7.4.0, click 'Update' or 'Check for updates' to download and install version 7.4.0 or later
- Alternatively, download the latest version of LINE for Windows from the official LINE website (line.me)
- Restart the application after updating to ensure the fix is applied
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-22820 — 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-2022-22820 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
- No spam, self-promotion, credentials, or personal data