D3600 FirmwareOperating system · Netgear
CVE-2021-45640
A fix is available.
Upgrade to 1.0.0.52 / 1.0.0.53 or later.
See remediation →
78/100
Remediation priority · High
Remotely reachable
Zero-click
Patch available
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 · uneditedCertain NETGEAR devices are affected by incorrect configuration of security settings. This affects D3600 before 1.0.0.72, D6000 before 1.0.0.72, D6200 before 1.1.00.34, D6220 before 1.0.0.52, D6400 before 1.0.0.86, D7000 before 1.0.1.74, D7000v2 before 1.0.0.53, D7800 before 1.0.1.56, D8500 before 1.0.3.44, DC112A before 1.0.0.42, DGN2200v4 before 1.0.0.110, DGND2200Bv4 before 1.0.0.109, DM200 before 1.0.0.61, EX3700 before 1.0.0.76, EX3800 before 1.0.0.76, EX6120 before 1.0.0.46, EX6130 before 1.0.0.28, EX7000 before 1.0.1.78, PR2000 before 1.0.0.28, R6220 before 1.1.0.100, R6230 before 1.1.0.100, R6250 before 1.0.4.34, R6300v2 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R6700 before 1.0.2.6, R6700v3 before 1.0.2.66, R6900 before 1.0.2.6, R7000 before 1.0.9.34, R7100LG before 1.0.0.50, R7500v2 before 1.0.3.40, R7900P before 1.4.1.50, R8000P before 1.4.1.50, R8900 before 1.0.4.12, R9000 before 1.0.4.12, RBK20 before 2.3.0.28, RBK40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR20 before 2.3.0.28, RBR40 before 2.3.0.28, RBR50 before 2.3.0.32, RBS20 before 2.3.0.28, RBS40 before 2.3.0.28, RBS50 before 2.3.0.32, WN3000RPv2 before 1.0.0.78, WNDR3400v3 before 1.0.1.24, WNR2000v5 before 1.0.0.70, WNR2020 before 1.1.0.62, WNR3500Lv2 before 1.2.0.62, XR450 before 2.3.2.56, and XR500 before 2.3.2.56.
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 analysisA detailed technical summary for this CVE is being prepared.
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
D3600 FirmwareOperating system
Affected:
< 1.0.0.72
D6000 FirmwareOperating system
Affected:
< 1.0.0.72
D6200 FirmwareOperating system
Affected:
< 1.1.00.34
D6220 FirmwareOperating system
Affected:
< 1.0.0.52
D6400 FirmwareOperating system
Affected:
< 1.0.0.86
D7000 FirmwareOperating system
Affected:
< 1.0.1.74
D7000v2 FirmwareOperating system
Affected:
< 1.0.0.53
D7800 FirmwareOperating system
Affected:
< 1.0.1.56CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 1.0.0.52 / 1.0.0.53 / 1.0.0.72 or later
Fixed in
1.0.0.521.0.0.531.0.0.72
Vendor patch
kb.netgear.com →
Recommended fix
High confidence
Firmware >= 1.0.0.72 (D3600/D6000), >= 1.1.00.34 (D6200), >= 1.0.0.52 (D6220), >= 1.0.0.86 (D6400), >= 1.0.1.74 (D7000), >= 1.0.0.53 (D7000v2), >= 1.0.1.56 (D7800)
- Identify the exact model number of your NETGEAR device from the product label or web interface
- Navigate to the NETGEAR support website (support.netgear.com) or use the NETGEAR Nighthawk/Orbi app
- Enter your device model number to access its support page
- Locate the firmware download section and check the current installed version (typically in Settings > Advanced > Administration > Firmware Update)
- Download the firmware version equal to or newer than the fixed version for your model: D3600/D6000: 1.0.0.72, D6200: 1.1.00.34, D6220: 1.0.0.52, D6400: 1.0.0.86, D7000: 1.0.1.74, D7000v2: 1.0.0.53, D7800: 1.0.1.56
- Upload and apply the firmware file through the router's web interface (Settings > Advanced > Administration > Firmware Update > Upload)
- Wait for the device to reboot (do not power off during the update process)
- Verify the new firmware version is installed and confirm the security settings are properly configured
Caveat Firmware updates may reset some custom configurations; back up settings before upgrading if possible
Generated from the published advisory — verify against the referenced sources before acting.
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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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-45640 in production — separate from our analysis above.
Know something about CVE-2021-45640?
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
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What belongs here
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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CVE-2021-45640
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