CVE-2021-43055
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 eFTL Server component of TIBCO Software Inc.'s TIBCO eFTL - Community Edition, TIBCO eFTL - Developer Edition, and TIBCO eFTL - Enterprise Edition contains an easily exploitable vulnerability that allows clients to inherit the permissions of the client that initially connected on the affected system. Affected releases are TIBCO Software Inc.'s TIBCO eFTL - Community Edition: versions 6.7.2 and below, TIBCO eFTL - Developer Edition: versions 6.7.2 and below, and TIBCO eFTL - Enterprise Edition: versions 6.7.2 and below.
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 confidenceThe eFTL Server component has a broken access control vulnerability where clients inherit permissions from the initially connected client rather than authenticating with their own distinct permissions. This allows unauthorized privilege escalation where subsequent clients gain the authorization context of the first client to connect.
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<= 6.7.2CVSS 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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Locate eFTL installation directoryCheck common installation paths such as /opt/tibco/eftl/, C:\Program Files\TIBCO\eftl\, or /usr/local/tibco/eftl/. Also check for environment variable TIBCO_EFTL_HOME if defined.Affected if eFTL software is present on the system
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Identify installed eFTL versionLocate the version file or executable within the eFTL installation. Common locations include: version.txt in the root directory, or run 'eftlserver --version' if the binary is accessible. Check the lib directory for JAR files containing version metadata.Affected if Installed version is 6.7.2 or lower
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Verify eFTL server is runningCheck for running processes: on Linux use 'ps aux | grep eftl', on Windows use Task Manager or 'wmic process where "name like '%eftl%'"'. Also check if port 9191 (default eFTL port) is listening using 'netstat -an | grep 9191'.Affected if eFTL server process is active and listening on network ports
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Check client connection configurationsReview eFTL client application configurations and code that establishes connections to the eFTL server. Look for patterns where multiple client applications connect to the same eFTL server instance without re-authenticating or with shared credential contexts.Affected if Multiple client applications connect to the same eFTL server using inherited session context
You are affected if TIBCO eFTL version 6.7.2 or lower is installed and running, and multiple clients can connect to inherit the authorization context of the first connected client.
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 dataUpgrade TIBCO eFTL to a version above 6.7.2. Review and validate client authorization configurations post-upgrade to ensure proper permission isolation between clients.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,888.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-43055 — 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-2021-43055 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
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