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Xr1000 FirmwareOperating system · Netgear

CVE-2021-45513

CRITICAL · 9.6 CVSS v3.1 Published 2021-12-26
Fix available
A fix is available. Upgrade to 1.0.0.58 or later.
See remediation →
100/100
Remediation priority · Urgent
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
NETGEAR XR1000 devices before 1.0.0.58 are affected by command injection by an unauthenticated attacker.

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

The NETGEAR XR1000 router firmware before version 1.0.0.58 contains a command injection vulnerability that allows an unauthenticated attacker to execute arbitrary system commands on the device, likely through unsanitized user input being passed to a system shell.

MitigationUpdate NETGEAR XR1000 devices to firmware version 1.0.0.58 or later to remediate the vulnerability. If immediate patching is not feasible, restrict network access to the device's management interface to prevent unauthenticated exploitation.

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
Xr1000 FirmwareOperating system
Affected:< 1.0.0.58

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/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. Confirm device model is NETGEAR XR1000
    Access the router administration interface or check the device label to verify the exact model number
    Affected if Device is not a NETGEAR XR1000 router - this vulnerability only affects that specific model
  2. Locate the firmware version information
    Access the router web interface (typically at 192.168.1.1) and navigate to the Administration or Firmware Update section to find the current firmware version, or use the NETGEAR mobile app if configured
    Affected if Unable to determine firmware version - cannot verify if vulnerable
  3. Compare installed version against affected range
    Note the firmware version displayed in the router admin panel and compare it numerically to 1.0.0.58
    Affected if Firmware version is less than 1.0.0.58 (for example, 1.0.0.54, 1.0.0.50, etc.) - the device is affected by this command injection flaw
  4. Verify network exposure to management interface
    Check router firewall settings and network configuration to determine if the router management interface (HTTP/HTTPS ports) is accessible from untrusted networks such as the internet
    Affected if Management interface is exposed to unauthenticated network attackers - combined with the vulnerable firmware, this allows remote command injection exploitation

The device is affected if it is a NETGEAR XR1000 router running firmware version 1.0.0.57 or lower, particularly if the management interface is accessible from untrusted networks.

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 1.0.0.58 or later
Fixed in 1.0.0.58
Interim mitigation

Update NETGEAR XR1000 devices to firmware version 1.0.0.58 or later to remediate the vulnerability. If immediate patching is not feasible, restrict network access to the device's management interface to prevent unauthenticated exploitation.

Recommended fix High confidence

Firmware version 1.0.0.58 or later for NETGEAR XR1000

  1. 1. Download firmware version 1.0.0.58 or later from the official NETGEAR support website (kb.netgear.com) for the XR1000 router
  2. 2. Connect to the XR1000 router's web interface by entering the router's IP address in a web browser
  3. 3. Log into the router administration panel with administrator credentials
  4. 4. Navigate to the 'Advanced' or 'Administration' settings section
  5. 5. Select 'Firmware Update' or 'Router Update' option
  6. 6. Click 'Browse' or 'Choose File' and select the downloaded firmware file
  7. 7. Click 'Upload' or 'Update' to begin the firmware upgrade process
  8. 8. Wait for the upload to complete and for the router to reboot - do not power off the device during this process
Caveat Standard firmware update - ensure stable power during upload; router will temporarily be unavailable during reboot

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

Fix this in Xr1000 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2021-45513 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