CVE-2021-23924
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 · uneditedAn issue was discovered in Devolutions Server before 2020.3. There is an exposure of sensitive information in diagnostic files.
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 confidenceDevolutions Server versions prior to 2020.3 contain diagnostic files that expose sensitive information. This vulnerability allows unauthenticated attackers to access these diagnostic files which may contain credentials, session data, or other confidential system details.
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< 2020.3CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 Devolutions Server installation and versionLocate the Devolutions Server installation directory and check the product version information, typically found in the application metadata, about page, or version file within the installation folderAffected if The installed version is any version prior to 2020.3 (e.g., 2020.2.x, 2020.1.x, etc.)
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Locate diagnostic files in the web rootSearch the web application directory (wwwroot, htdocs, or similar web content folder) for files with extensions or names indicating diagnostic output such as .log, .dump, .txt, .xml, or files named 'diagnostic', 'debug', 'trace', or 'error'Affected if Diagnostic or debug files exist in publicly accessible web directories
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Verify web server exposure of diagnostic filesAttempt to access common diagnostic file paths via HTTP/HTTPS request to the Devolutions Server (e.g., curl or browser request to suspected diagnostic file URLs)Affected if HTTP requests to diagnostic file paths return file contents without authentication
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Check file system permissions on diagnostic filesInspect file system permissions on any discovered diagnostic files to determine if they are readable by the web server process or anonymous usersAffected if Diagnostic files have overly permissive read access (e.g., Everyone, Users, or anonymous web user can read them)
Your environment is affected if Devolutions Server version is below 2020.3 AND diagnostic files are present and accessible without authentication.
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 data2020.3
Upgrade Devolutions Server to version 2020.3 or later. If immediate upgrading is not feasible, restrict or disable access to diagnostic files through web server configuration or file system permissions.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2021-23924 — 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-2021-23924 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
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data