CVE-2020-25780
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 · uneditedIn CommCell in Commvault before 14.68, 15.x before 15.58, 16.x before 16.44, 17.x before 17.29, and 18.x before 18.13, Directory Traversal can occur such that an attempt to view a log file can instead view a file outside of the log-files folder.
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 confidenceA directory traversal vulnerability in CommVault CommCell's log file viewing functionality allows authenticated attackers to use '../' sequences in the file path to access files outside the intended log-files directory, potentially exposing sensitive system files.
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< 14.68>= 15.0, < 15.58>= 16.0, < 16.44>= 17.0, < 17.29>= 18.0, < 18.13CVSS 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.
-
Identify CommVault CommCell versionLog into the CommVault CommCell Console and navigate to the About section, or run the 'qoperations -version' command from the server command line to retrieve the installed version numberAffected if The installed version is less than 14.68, or between 15.0 and 15.58, or between 16.0 and 16.44, or between 17.0 and 17.29, or between 18.0 and 18.13
-
Confirm log viewer web interface is accessibleVerify that the CommVault web console log viewer functionality is enabled and reachable (typically at the /webconsole/logviewer endpoint or through the Logs section in the web UI)Affected if The log viewer web interface is accessible and the version check in step 1 shows an affected version
-
Check for authenticated user access to log viewerDetermine whether any CommVault user accounts have permissions to access the log viewer feature, as the vulnerability requires an authenticated attackerAffected if Authenticated users with log viewer access exist and the version is within the affected ranges
The environment is affected if the CommVault CommCell version falls within any of the vulnerable version ranges AND the log viewer functionality is accessible to authenticated 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.
From vendor data14.6815.5816.44
Apply the vendor patch by updating CommCell to version 14.68, 15.58, 16.44, 17.29, or 18.13 or later, which contains the fix for the directory traversal in the log viewer.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25780 — 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-2020-25780 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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