CVE-2018-12839
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 · uneditedAdobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.
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 confidenceAn out-of-bounds read vulnerability exists in Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier. The vulnerability allows reading memory beyond allocated boundaries, potentially exposing sensitive information to attackers.
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>= 15.006.30060, <= 15.006.30452>= 15.008.20082, <= 18.011.20063>= 17.011.30059, <= 17.011.30102>= 15.006.30060, <= 15.006.30452>= 15.008.20082, <= 18.011.20063>= 17.011.30059, <= 17.011.30102CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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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Identify installed Adobe Acrobat or Reader versionOpen the application, go to Help > About Adobe Acrobat (or Reader). Alternatively, right-click the executable (Acrobat.exe or AcroRd32.exe) in Program Files and select Properties > Details to view the File Version.Affected if The displayed version falls within these ranges: 15.006.30060 to 15.006.30452, 15.008.20082 to 18.011.20063, or 17.011.30059 to 17.011.30102.
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Confirm product type and build trackDetermine whether the installation is Adobe Acrobat DC or Adobe Acrobat Reader DC, and identify the major version number (15.x/2015 track, 17.x/2017 track, or 18.x/2018 track).Affected if The product is Acrobat DC or Reader DC with a build matching the affected version ranges above.
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Verify the vulnerability trigger conditionThis is a memory read vulnerability that triggers when processing specially crafted PDF files. There is no specific feature or setting that must be enabled; the flaw exists in the PDF parsing logic itself.Affected if The installed version is within the affected ranges; any PDF parsing operation could potentially trigger the out-of-bounds read.
A user is affected if they have Adobe Acrobat DC or Adobe Acrobat Reader DC installed with a version between 15.006.30060 and 15.006.30452, between 15.008.20082 and 18.011.20063, or between 17.011.30059 and 17.011.30102.
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 dataUpdate Adobe Acrobat and Reader to the latest version (2018.011.20064 or later for 2018 track, 2017.011.30103 or later for 2017 track, and 2015.006.30453 or later for 2015 track).
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-12839 — 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-2018-12839 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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