CVE-2016-0857
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 · uneditedMultiple heap-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbitrary code via unspecified vectors.
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 confidenceMultiple heap-based buffer overflow vulnerabilities in Advantech WebAccess (SCADA/HMI visualization software) versions prior to 8.1 allow remote unauthenticated attackers to execute arbitrary code by sending specially crafted network packets to the affected service.
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<= 8.0CVSS 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
- 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
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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Confirm Advantech WebAccess installationLocate Advantech WebAccess software on the system through installed programs, program files directory, or running processesAffected if Advantech WebAccess is present on the system
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Identify installed versionDetermine the exact version number of the installed Advantech WebAccess (check program files, registry, or application about dialog) and compare against the vulnerable rangeAffected if Installed version is 8.0 or earlier (versions prior to 8.1 are affected)
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Assess network accessibility of the serviceDetermine if the Advantech WebAccess service is listening on network ports or accessible from external network connections, since the vulnerability is exploitable via specially crafted network packetsAffected if The vulnerable service is network-accessible and version is <= 8.0
The environment is affected if Advantech WebAccess version 8.0 or earlier is installed and the service is exposed to network traffic.
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 · scopedUpgrade Advantech WebAccess to version 8.1 or later. As interim measures, isolate affected systems behind firewalls, restrict network access to SCADA networks, and monitor for Indicators of Compromise.
Advantech WebAccess 8.1 or later (current stable release recommended)
- Create a complete backup of the current WebAccess installation, including configuration files and project data.
- Consult Advantech product documentation and release notes for upgrade prerequisites and procedures.
- Obtain WebAccess version 8.1 or later from the official Advantech download portal or support channels.
- Stop all WebAccess services before beginning the upgrade process.
- Execute the installer for version 8.1 or later, following the vendor's official upgrade instructions.
- After installation, restart WebAccess services and verify the version number matches the expected fixed release.
- Validate that critical functionalities and configured projects operate correctly after upgrade.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-0857 — 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-2016-0857 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