CVE-2026-1286
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 · uneditedCWE-502: Deserialization of untrusted data vulnerability exists that could lead to loss of confidentiality, integrity and potential remote code execution on workstation when an admin authenticated user opens a malicious project file.
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 confidenceA deserialization vulnerability (CWE-502) exists in project file handling where an authenticated administrator who opens a specially crafted malicious project file can trigger unsafe deserialization of untrusted data, potentially leading to remote code execution.
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< 8.1CVSS 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
- High
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/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 if Schneider Electric Ecostruxure Foxboro DCS Control Software is installedCheck installed programs or software inventory for 'Schneider Electric Ecostruxure Foxboro DCS Control Software'Affected if The product is present in the environment
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Determine the installed version of Foxboro DCS Control SoftwareUse system inventory tools, software metadata, or version information in the product itself to obtain the exact version numberAffected if The installed version is lower than 8.1 (e.g., 8.0, 7.x, etc.)
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Verify if the product has project file handling functionalityCheck if the software includes features for opening, importing, or loading project filesAffected if Project file handling capability exists and is accessible within the software
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Confirm administrator access to the softwareDetermine if authenticated administrator accounts can log into and use the Foxboro DCS Control SoftwareAffected if Administrators have login access to the software and can initiate file operations
The environment is affected if Schneider Electric Ecostruxure Foxboro DCS Control Software is installed with a version lower than 8.1 and administrators have the ability to open project files.
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 · scoped8.1
Restrict the ability to open project files from untrusted sources; implement strict validation and safe deserialization practices for project file parsing; apply principle of least privilege for file handling operations.
8.1 or later
- Obtain Ecostruxure Foxboro DCS Control Software version 8.1 or later from Schneider Electric's official download portal or contact Schneider Electric support
- Review Schneider Electric's official upgrade documentation for Foxboro DCS before proceeding
- Test the upgrade in a non-production/staging environment before deploying to production
- Apply the upgrade following Schneider Electric's recommended upgrade procedure
- After upgrading, verify the deserialization vulnerability is resolved and ensure only trusted project files from verified sources are opened
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-1286 — 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-2026-1286 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