CVE-2022-43763
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 · uneditedInsufficient check of preconditions could lead to Denial of Service conditions when calling commands on the Tbase server of B&R APROL versions < R 4.2-07.
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 confidenceInsufficient validation of input preconditions in the Tbase server component of B&R APROL allows remote attackers to trigger denial-of-service conditions by sending specially crafted commands. The vulnerability affects versions prior to R 4.2-07 and can cause the Tbase server to become unresponsive or crash.
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< r4.2-07CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 installed APROL versionLocate the APROL version information in the system (typically found in the system information panel, version file, or control system configuration). Compare the version number to the affected range (versions prior to R 4.2-07).Affected if The installed version is a release prior to R 4.2-07 (for example, R 4.2-06, R 4.2-05, R 4.1-xx, etc.)
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Verify Tbase server component statusDetermine whether the Tbase server component is installed and running on the APROL system. Check the services, processes, or component list specific to the APROL installation.Affected if The Tbase server component is installed and active on the system
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Assess network accessibility of Tbase serverIdentify the network configuration and exposure of the Tbase server port/service. Determine if it is accessible from untrusted network segments or directly from the internet.Affected if The Tbase server is reachable from network segments that are not exclusively trusted internal endpoints
The environment is affected if the installed APROL version is prior to R 4.2-07 AND the Tbase server component is active AND it is accessible from untrusted network locations.
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 · scopedUpgrade B&R APROL to version R 4.2-07 or later to remediate the vulnerability. Until patched, restrict network access to the Tbase server to trusted endpoints only.
R4.2-07 or later
- Upgrade B&R APROL to version R4.2-07 or later to address the insufficient precondition check vulnerability
- After upgrading, verify the Tbase server service is running properly
- Test that commands on the Tbase server function correctly without causing denial of service conditions
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-43763 — 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-2022-43763 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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