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Enterprise Linux DesktopOperating system · Redhat

CVE-2018-12828

CRITICAL · 9.8 CVSS v3.0 Published 2018-08-29
Fix available
A fix is available. Upgrade to after 30.0.0.154 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Adobe Flash Player 30.0.0.134 and earlier have a "use of a component with a known vulnerability" vulnerability. Successful exploitation could lead to privilege escalation.

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

A detailed technical summary for this CVE is being prepared.

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
Enterprise Linux DesktopOperating system
Affected:= 6.0
Enterprise Linux ServerOperating system
Affected:= 6.0
Enterprise Linux WorkstationOperating system
Affected:= 6.0
Flash PlayerApplication
Affected:<= 30.0.0.154

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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 · scoped
Upgrade available Upgrade to a release after 30.0.0.154
Vendor patch helpx.adobe.com →
Recommended fix High confidence
  1. Adobe Flash Player reached end-of-life on December 31, 2020 and is no longer supported by Adobe.
  2. Remove Adobe Flash Player from all systems using the operating system's package manager or manual removal.
  3. On RHEL/CentOS systems: sudo yum remove flash-plugin or sudo rpm -e flash-plugin
  4. On Debian/Ubuntu systems: sudo apt-get remove flashplugin-installer or sudo apt-get purge flashplugin-inraper
  5. On Windows: Use Control Panel > Programs and Features to uninstall Adobe Flash Player, or use the Adobe Flash Player Uninstaller from https://www.adobe.com/products/flashplayer/end-of-life.html
  6. Verify removal: Confirm no Flash plugins remain in /usr/lib/flash-plugin, /usr/lib64/flash-plugin, or browser plugin directories
  7. Consider migrating any Flash-based content to modern HTML5/CSS3/JavaScript alternatives as Flash content can no longer be displayed
Caveat Adobe Flash Player is end-of-life and no longer receives security updates. All Flash content must be migrated to modern web technologies. Some legacy applications may no longer function.

Generated from the published advisory — verify against the referenced sources before acting.

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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-2018-12828 in production — separate from our analysis above.

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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