CVE-2021-35218
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 · uneditedDeserialization of Untrusted Data in the Web Console Chart Endpoint can lead to remote code execution. An unauthorized attacker who has network access to the Orion Patch Manager Web Console could potentially exploit this and compromise the server
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 confidenceThis is a deserialization of untrusted data vulnerability in the Web Console Chart Endpoint of SolarWinds Orion Patch Manager. An unauthenticated attacker with network access can send specially crafted serialized data to the Chart Endpoint, leading to remote code execution on the affected server.
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< 2020.2.6CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 SolarWinds Orion Platform installationLocate the Orion Platform installation directory and locate the version information file, typically found in the installation root or in configuration filesAffected if SolarWinds Orion Platform is installed and the version is below 2020.2.6
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Confirm Patch Manager module is presentCheck the installed modules or components list within the Orion Platform to verify Patch Manager is installed and enabledAffected if Patch Manager module is installed and the Orion Platform version is below 2020.2.6
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Verify Web Console accessibilityDetermine if the Orion Web Console is accessible over the network by checking the HTTP/HTTPS listener configuration and network binding settingsAffected if The Web Console is exposed to untrusted network paths and the version is below 2020.2.6
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Confirm Chart Endpoint is reachableTest network access to the Chart Endpoint path (typically under the Patch Manager web interface) from an untrusted network perspectiveAffected if The Chart Endpoint is reachable from untrusted networks and the version is below 2020.2.6
The environment is affected if SolarWinds Orion Platform with Patch Manager is installed, the version is below 2020.2.6, and the Web Console Chart Endpoint is accessible from untrusted networks.
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 · scoped2020.2.6
Restrict network access to the Orion Patch Manager Web Console to trusted IPs only and apply vendor security patches when available. Until patched, consider disabling or blocking access to the Chart Endpoint.
2020.2.6 or later
- Upgrade the Orion Platform to version 2020.2.6 or later to address the deserialization vulnerability
- Before upgrading, review the SolarWinds upgrade documentation and ensure you have a complete backup of the system
- Schedule the upgrade during a maintenance window as upgrades may require service restarts
- After upgrading, verify the Patch Manager Web Console is functioning correctly
- Confirm the version by checking the Orion Platform information within the web console
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-35218 — 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-2021-35218 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