CVE-2020-10656
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 · uneditedThe Proofpoint Insider Threat Management Server (formerly ObserveIT Server) before 7.9.1 contains a vulnerability in the ITM application server's WriteWindowMouseWithChunksV2 API. The vulnerability allows an anonymous remote attacker to execute arbitrary code with local administrator privileges. The vulnerability is caused by improper deserialization.
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 confidenceThe Proofpoint Insider Threat Management Server (formerly ObserveIT) before version 7.9.1 contains a deserialization vulnerability in the WriteWindowMouseWithChunksV2 API. An anonymous remote attacker can exploit improper deserialization to execute arbitrary code with local administrator privileges, achieving full compromise of 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< 7.9.1CVSS 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
- 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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Verify the ITM Server is installedCheck for the presence of the Proofpoint Insider Threat Management Server or ObserveIT software on the system. Look for installation directories (commonly under C:\Program Files\ObserveIT or C:\Program Files\Proofpoint\ITM) or check the Windows Add/Remove Programs list.Affected if The software is present on the system
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Determine the installed versionLocate the version information in the ITM Server installation. Check the About section in the management console, or examine version files in the installation directory. The version is typically displayed in the server's admin interface or can be retrieved via the product's built-in version check utility.Affected if The installed version is lower than 7.9.1 (for example, 7.9.0, 7.8.x, or earlier)
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Confirm the vulnerable API is accessibleVerify that the WriteWindowMouseWithChunksV2 API endpoint is exposed and reachable on the ITM Server. This API is part of the server's web interface or API service. Check network listening ports and accessible endpoints on the server.Affected if The API is accessible over the network and the version is below 7.9.1
The environment is affected if the Proofpoint Insider Threat Management Server is installed and the version is below 7.9.1, with the vulnerable API endpoint exposed.
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 data7.9.1
Upgrade the ITM Server to version 7.9.1 or later to remediate this vulnerability. If immediate patching is not feasible, restrict network access to the ITM application server and implement additional monitoring for suspicious deserialization activity.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-10656 — 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-2020-10656 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
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