CVE-2025-52873
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 · uneditedCognex In-Sight Explorer and In-Sight Camera Firmware expose a telnet-based service on port 23 to allow management operations such as firmware upgrades and device reboots, which require authentication. A user with protected privileges can successfully invoke the SetSystemConfig functionality to modify relevant device properties (such as network settings), contradicting the security model proposed in the user manual.
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 confidenceCognex In-Sight Explorer and In-Sight Camera firmware expose a telnet service on port 23 for management operations. Although authentication is required, a user with protected (lower) privileges can successfully invoke the SetSystemConfig functionality to modify sensitive device properties such as network settings, bypassing the intended security model documented in the user manual.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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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Verify telnet service status on the deviceAccess the device management interface or use network scanning tools (e.g., nmap) to check if port 23/telnet is open and listening on the Cognex deviceAffected if Port 23 is open and telnet service is enabled on the device
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Confirm device is a Cognex In-Sight productIdentify the device model through device discovery, web interface, or documentation. Confirm it is a Cognex In-Sight Explorer or In-Sight Camera deviceAffected if The device is a Cognex In-Sight Explorer or In-Sight Camera with telnet enabled
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Check user privilege configurationLog into the device via telnet or available management interface and enumerate user accounts. Identify accounts with protected (lower) privileges versus administrator privilegesAffected if A user with protected/lower privileges exists on the device
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Verify SetSystemConfig accessibility for lower-privilege usersUsing a protected-level user account, attempt to invoke the SetSystemConfig functionality via telnet to modify network settings or other sensitive properties. Observe if the operation succeeds despite the limited privilege levelAffected if A protected (lower privilege) user can successfully invoke SetSystemConfig to modify sensitive settings like network configuration
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Review network exposure of telnet portExamine network segmentation, firewall rules, and access control lists to determine if port 23 is accessible from untrusted networks or the internetAffected if Port 23/telnet is accessible from networks outside the trusted management zone
A user is affected if they have a Cognex In-Sight device with telnet on port 23 enabled, and a protected (non-administrator) user account can successfully invoke SetSystemConfig to modify sensitive device properties, particularly if the telnet service is exposed beyond trusted networks.
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 dataApply vendor-supplied firmware patches when available. As a compensating control, restrict network access to port 23 using firewalls or network segmentation, and ensure telnet is disabled if alternative secure management interfaces are available.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-52873 — 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-2025-52873 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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