CVE-2018-8845
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, a heap-based buffer overflow vulnerability has 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 confidenceA heap-based buffer overflow vulnerability in Advantech WebAccess (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) allows remote attackers to execute arbitrary code via crafted network requests.
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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Identify Advantech WebAccess installationLook for WebAccess installation directories or installed programs on the system. Check common installation paths such as C:\inetpub\wwwroot\WebAccess or search for 'WebAccess' in program listings.Affected if The software is present on the system
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Determine WebAccess versionLocate version information in the installation directory, typically in an About or Version file, or check the Windows program properties. The version may be displayed in the WebAccess Dashboard or SCADA application interface.Affected if The installed version is <= 8.2_20170817 or <= 8.3.0 for WebAccess, <= 2.0.15 for Dashboard, < 8.3.1 for Scada, or <= 2.0.3 for NMS
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Determine WebAccess/NMS versionCheck the NMS component installation for its version number, typically found in program files or the application interface.Affected if The NMS version is <= 2.0.3
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Verify network exposure of WebAccess servicesCheck if the WebAccess IIS or application services are listening on network interfaces. Review firewall rules and IIS bindings to determine if the web service is accessible from network segments.Affected if WebAccess web services are exposed to network traffic beyond isolated segments
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Confirm vulnerable service is runningCheck if the Advantech WebAccess service (typically running under IIS or as a Windows service) is actively running and processing network requests.Affected if The WebAccess service is running and accessible
The environment is affected if Advantech WebAccess, Dashboard, Scada, or NMS is installed with a version within the affected ranges AND the web interface is network-accessible.
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 · scoped8.3.1
Upgrade to WebAccess V8.3.1 or later, WebAccess/NMS V2.0.4 or later, or apply vendor-supplied patches; isolate affected systems on network segments and implement compensating controls until patching is complete.
Webaccess 8.3.1+, Webaccess Scada 8.3.1+, Webaccess Dashboard 2.0.16+, Webaccess/nms 2.0.4+
- 1. Identify the specific Advantech WebAccess product and current installed version in your environment
- 2. For Webaccess: Upgrade to version 8.3.1 or later
- 3. For Webaccess Scada: Upgrade to version 8.3.1 or later
- 4. For Webaccess Dashboard: Upgrade to version 2.0.16 or later
- 5. For Webaccess/nms: Upgrade to version 2.0.4 or later
- 6. After upgrading, verify the new version is running and confirm the vulnerability is resolved
- 7. Review vendor release notes for any additional security patches included in the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-8845 — 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-2018-8845 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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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.
- 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