CVE-2020-7526
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 · uneditedImproper Input Validation vulnerability exists in PowerChute Business Edition (software V9.0.x and earlier) which could cause remote code execution when a script is executed during a shutdown event.
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 confidenceImproper input validation in PowerChute Business Edition (v9.0.x and earlier) allows remote code execution through malicious scripts triggered during shutdown events. The vulnerability stems from insufficient sanitization of input when the software processes scripts during UPS shutdown sequences.
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< 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
- 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 the installed PowerChute Business Edition versionLocate the PowerChute Business Edition installation on the system and retrieve its version information. This is typically found in the application itself, in installed programs list, or in the software's about/-help section.Affected if The installed version is 9.0.x or any version earlier than 9.1 (for example, 9.0.0 through 9.0.3). Compare your version against the affected range of versions less than 9.1.
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Determine if shutdown scripts are configuredExamine the PowerChute Business Edition configuration to see if custom scripts are defined to run during UPS shutdown events. This is typically found in the shutdown sequence or script configuration settings within the application.Affected if Shutdown scripts are defined and enabled in the PowerChute configuration, as the vulnerability is exploited through malicious scripts triggered during shutdown events.
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Verify the script execution configurationInspect the PowerChute configuration files or settings that control script execution during shutdown sequences. Look for any settings that allow external or user-defined scripts to run without input validation.Affected if Script execution during shutdown events is permitted without strict validation controls, which is the condition the vulnerability exploits.
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Assess network exposure of the management interfaceDetermine if the PowerChute management interface is accessible over the network. Check network listening services, firewall rules, or access control lists that might allow external systems to communicate with PowerChute.Affected if The PowerChute management interface is exposed to network access without adequate restrictions, as the vulnerability allows remote code execution through the interface.
You are affected if PowerChute Business Edition version is below 9.1 AND shutdown scripts are enabled/configured in your environment.
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 data9.1
Update to a patched version of PowerChute Business Edition if available. Until then, restrict network access to the PowerChute management interface and disable or strictly control script execution during shutdown events through configuration.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-7526 — 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-2020-7526 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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- Version or environment caveats, and links to real fixes
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