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Ata 191 FirmwareOperating system · Cisco

CVE-2024-20458

HIGH · 8.2 CVSS v3.1 Published 2024-10-16
Fix available
A fix is available. Upgrade to 11.2.5 / 12.0.2 or later.
See remediation →
91/100
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
A vulnerability in the web-based management interface of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, remote attacker to view or delete the configuration or change the firmware on an affected device. This vulnerability is due to a lack of authentication on specific HTTP endpoints. An attacker could exploit this vulnerability by browsing to a specific URL. A successful exploit could allow the attacker to view or delete the configuration or change the firmware.

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 confidence

This is an authentication bypass vulnerability in the web-based management interface of Cisco ATA 190 Series Analog Telephone Adapters. The flaw stems from missing authentication checks on specific HTTP endpoints, allowing unauthenticated remote attackers to access these URLs to view or delete device configuration or upload arbitrary firmware images.

MitigationApply the vendor-supplied firmware patch when available; until then, restrict network access to the device management interface using firewall rules or ACLs to prevent unauthorized access from untrusted networks.

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
Ata 191 FirmwareOperating system
Affected:< 12.0.2< 11.2.5
Ata 192 FirmwareOperating system
Affected:< 11.2.5

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
None
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

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. Identify the ATA device model
    Locate the hardware model number on the device label or access the device CLI and run 'show version' to confirm the model is Cisco ATA 191 or ATA 192
    Affected if Device model is ATA 191 or ATA 192
  2. Check the installed firmware version
    Access the web-based management interface and navigate to the System Information page, or use the CLI command 'show version' to retrieve the firmware version number
    Affected if Firmware version is below 12.0.2 for ATA 191, or below 11.2.5 for either ATA 191 or ATA 192
  3. Verify if the web management interface is enabled
    Log into the device CLI or web interface and check the HTTP/HTTPS service status under the management settings
    Affected if The web-based management interface (HTTP or HTTPS) is enabled on the device
  4. Assess network exposure of the web interface
    Check the device network configuration to determine which IP addresses or networks can reach the web management interface. Review firewall rules or ACLs if the device is deployed behind a network perimeter
    Affected if The web management interface is accessible from untrusted networks or directly from the internet

Your environment is affected if you are running an ATA 191 or ATA 192 device with firmware below the fixed versions AND the web management interface is enabled, regardless of network exposure.

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
Upgrade available Upgrade to 11.2.5 / 12.0.2 or later
Fixed in 11.2.512.0.2
Interim mitigation

Apply the vendor-supplied firmware patch when available; until then, restrict network access to the device management interface using firewall rules or ACLs to prevent unauthorized access from untrusted networks.

Recommended fix High confidence

Cisco ATA 191: upgrade to firmware 12.0.2 (or 11.2.5); Cisco ATA 192: upgrade to firmware 11.2.5

  1. Identify the exact model (ATA 191 or ATA 192) of the affected Cisco Analog Telephone Adapter
  2. Determine the current firmware version by accessing the web-based management interface or checking the device status
  3. For ATA 191 devices: Upgrade firmware to version 12.0.2 or later (or 11.2.5 or later if staying on 11.x branch)
  4. For ATA 192 devices: Upgrade firmware to version 11.2.5 or later
  5. Download firmware only from the official Cisco software download center (software.cisco.com)
  6. Access the web-based management interface and navigate to the Firmware Upgrade or Administration section
  7. Upload the downloaded firmware file and initiate the upgrade process
  8. Wait for the upgrade to complete and verify the device reboots successfully
Caveat Standard firmware upgrade procedure; ensure backup of current configuration before upgrading; device will reboot during upgrade

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

Fix this in Ata 191 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing3.0 h
  • Review / QA2.0 h
8.0 hours of engineering $1,390
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

Scan for this in your stack

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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-2024-20458 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
  • 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