CVE-2020-15027
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 · uneditedConnectWise Automate through 2020.x has insufficient validation on certain authentication paths, allowing authentication bypass via a series of attempts. This was patched in 2020.7 and in a hotfix for 2019.12.
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 confidenceConnectWise Automate through 2020.x contains an authentication bypass vulnerability due to insufficient validation on certain authentication paths, allowing attackers to bypass authentication through a series of crafted attempts. This critical flaw enables unauthenticated remote attackers to gain unauthorized access to the system.
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< 2019.12>= 2020.0, <= 2020.7CVSS 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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Identify ConnectWise Automate versionLocate the Automate installation directory and check the version file or registry entry for the build number. This is typically found in the installation path or can be retrieved via the Automate control panel.Affected if The version is less than 2019.12, or falls between 2020.0 and 2020.7 inclusive.
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Confirm network exposure of the Automate web interfaceDetermine if the Automate web portal (typically ports 80/443 or custom configured ports) is accessible from untrusted networks or the internet. Review firewall rules and web server bindings.Affected if The web interface is exposed to unauthenticated network access without proper segmentation or VPN requirements.
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Review authentication module configurationExamine the web.config or associated authentication configuration files within the Automate web directory for custom authentication paths or overrides that may bypass standard validation.Affected if Custom authentication handlers or paths exist that circumvent the standard login validation routines.
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Check for presence of security hotfixReview installed updates or hotfixes within the Automate system. This may be visible in the control panel, update history, or patch management logs.Affected if The hotfix addressing CVE-2020-15027 is not installed on the system.
A system is affected if it runs ConnectWise Automate version 2019.12 or earlier, or version 2020.0 through 2020.7, and has its web interface accessible to unauthenticated users.
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 · scoped2019.12
Apply the patched version 2020.7 or later, or install the hotfix for version 2019.12, to remediate the insufficient authentication validation in ConnectWise Automate.
2020.7
- Upgrade ConnectWise Automate to version 2020.7 or later, which includes the patch for the authentication bypass vulnerability
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-15027 — 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-2020-15027 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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