CVE-2018-7499
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 Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, several stack-based buffer overflow vulnerabilities have been identified, which may allow an attacker to execute arbitrary code.
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 · high confidenceMultiple stack-based buffer overflow vulnerabilities exist in Advantech WebAccess software (versions V8.2_20170817 and prior, V8.3.0 and prior, Dashboard V.2.0.15 and prior, Scada Node prior to 8.3.1, and NMS 2.0.3 and prior). These memory corruption flaws can be exploited to achieve arbitrary code execution on affected systems.
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<= 8.2_20170817<= 8.3.0<= 2.0.15< 8.3.1<= 2.0.3CVSS 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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Locate Advantech WebAccess installation directoriesSearch common installation paths such as C:\Program Files\Advantech\WebAccess, C:\Advantech\WebAccess, or check Windows registry under HKLM\SOFTWARE\Advantech\WebAccess for installation paths. On Linux, check /opt/Advantech or /usr/local/Advantech directories.Affected if Advantech WebAccess software is found installed on the system
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Identify installed WebAccess component(s)List the subdirectories within the WebAccess installation folder to determine which components are present: WebAccess (core), Dashboard, Scada, or nms (network management system).Affected if Any of the affected components (WebAccess core, Dashboard, Scada, or NMS) are installed
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Check WebAccess core versionLocate version information in the installation directory, typically in a version.txt, README, or the executable properties of the main WebAccess service (often named something like BroadWeb.exe or in the bw folder). Compare the version number to 8.2_20170817 and 8.3.0.Affected if Version is 8.2_20170817 or prior, or 8.3.0 or prior
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Check WebAccess Dashboard versionFind the Dashboard component version file or executable (often named Dashboard.exe or within a dashboard subfolder) and view its version properties. Compare to version 2.0.15.Affected if Dashboard version is 2.0.15 or prior
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Check WebAccess Scada Node versionLocate the Scada Node component version information, typically in a scada subdirectory. Compare to version 8.3.1.Affected if Scada Node version is prior to 8.3.1 (any version below 8.3.1)
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Check WebAccess/nms versionLocate the nms component version information in the nms subdirectory or associated files. Compare to version 2.0.3.Affected if NMS version is 2.0.3 or prior
The system is vulnerable if any installed Advantech WebAccess component version falls within or below the specified affected ranges for that component.
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 data8.3.1
Update affected WebAccess components to V8.3.1 or later for Scada Node, and V8.3.1 or later for other components. In SCADA environments, test updates in a staging environment before production deployment due to operational technology constraints.
- Consultation8.0 h
- Implementation12.0 h
- Testing16.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,160.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-7499 — 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-2018-7499 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