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Gatemanager 8250 FirmwareOperating system · Secomea

CVE-2020-14510

CRITICAL · 9.8 CVSS v3.1 Published 2020-08-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
GateManager versions prior to 9.2c, The affected product contains a hard-coded credential for telnet, allowing an unprivileged attacker to execute commands as root.

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 confidence

GateManager versions prior to 9.2c contain a hard-coded credential for the telnet service. This allows any unauthenticated attacker to use this credential to connect via telnet and execute arbitrary commands with root-level privileges.

MitigationUpgrade GateManager to version 9.2c or later which removes the hard-coded credential. If upgrading is not immediately possible, disable the telnet service and use SSH with proper authentication instead.

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
Gatemanager 8250 FirmwareOperating system
Affected:= 9.2c

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Determine the installed GateManager firmware version
    Access the GateManager web interface or check the system information page. Alternatively, run the command 'dmidecode' or check '/proc/version' if you have CLI access to the appliance.
    Affected if The firmware version is less than 9.2c (for example, 9.2b, 9.1, 9.0, etc.)
  2. Identify if the telnet service is enabled
    Check the GateManager service configuration or running services list. On the appliance CLI, run 'netstat -tulpn' or 'ss -tulpn' to list listening services. Look for port 23 (telnet) in the output.
    Affected if The telnet service (port 23) is listening and enabled on the system
  3. Locate the telnet service configuration
    Examine the telnet daemon configuration files. Common locations include '/etc/xinetd.d/telnet', '/etc/inetd.conf', or check the GateManager's internal service configuration if accessible via the web UI under Services or Network settings.
    Affected if The telnet configuration file exists and the service is configured to run (especially with 'disable = no' or similar setting)
  4. Inspect for hard-coded credentials in telnet configuration
    Open the telnet service configuration file and search for any username/password pairs stored in plain text. Look for credentials defined within the configuration that are not user-configurable.
    Affected if A hard-coded username and password pair is found in the telnet configuration that was not set by the administrator

You are affected if your GateManager firmware version is prior to 9.2c AND the telnet service is enabled, as this combination allows unauthenticated root access using the known hard-coded credential.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade GateManager to version 9.2c or later which removes the hard-coded credential. If upgrading is not immediately possible, disable the telnet service and use SSH with proper authentication instead.

Recommended fix High confidence

9.2c

  1. 1. Identify the current Gatemanager firmware version by accessing the admin interface or running 'show version' via CLI
  2. 2. Navigate to the official Allot/Gatemanager support portal and download firmware version 9.2c or later
  3. 3. Access the Gatemanager administrative web interface (typically https://<device-ip>:8443)
  4. 4. Go to System > Firmware Upgrade or Administration > Software Update
  5. 5. Upload the downloaded 9.2c firmware file and initiate the upgrade
  6. 6. Wait for the upgrade to complete and the device to reboot automatically
  7. 7. Verify the new firmware version is 9.2c or later after reboot
  8. 8. Confirm that the hard-coded telnet credential no longer functions
Caveat Telnet access is being removed as part of this security fix; use SSH or the web interface for remote administration

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Gatemanager 8250 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-14510 in production — separate from our analysis above.

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What this is

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.

What belongs here
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  • Version or environment caveats, and links to real fixes
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