CVE-2021-45602
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 command injection by an authenticated user. This affects D7800 before 1.0.1.66, EX2700 before 1.0.1.68, WN3000RPv2 before 1.0.0.90, WN3000RPv3 before 1.0.2.100, LBR1020 before 2.6.5.20, LBR20 before 2.6.5.32, R6700AX before 1.0.10.110, R7800 before 1.0.2.86, R8900 before 1.0.5.38, R9000 before 1.0.5.38, RAX10 before 1.0.10.110, RAX120v1 before 1.2.3.28, RAX120v2 before 1.2.3.28, RAX70 before 1.0.10.110, RAX78 before 1.0.10.110, XR450 before 2.3.2.130, XR500 before 2.3.2.130, and XR700 before 1.0.1.46.
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 analysisUser input reaches a shell or system command without being fully separated from the command itself, so an attacker can append their own instructions. Because these run with the application's privileges, it often means full control of the host. The lasting fix is to avoid the shell entirely — call APIs directly and pass arguments as data, never as concatenated strings.
General guidance for the os command injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →
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< 1.0.1.66< 1.0.1.68< 1.0.0.90< 1.0.2.100< 2.6.5.20< 2.6.5.32< 1.0.10.110< 1.0.2.86CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 · scoped1.0.0.901.0.1.661.0.1.68
Device-specific fixed firmware versions (see step 6 for version mapping)
- 1. Identify the specific NETGEAR device model from the affected product list (D7800, EX2700, WN3000RPv2, WN3000RPv3, LBR1020, LBR20, R6700AX, R7800, R8900, R9000, RAX10, RAX120v1, RAX120v2, RAX70, RAX78, XR450, XR500, or XR700)
- 2. Access the device's web administration interface using administrator credentials
- 3. Navigate to the Firmware Update or Administration section
- 4. Download the corresponding fixed firmware version from the official NETGEAR support site (kb.netgear.com) for your specific model
- 5. Upload and apply the firmware update to the device
- 6. After the update completes, verify the firmware version matches the fixed release: D7800 → 1.0.1.66, EX2700 → 1.0.1.68, WN3000RPv2 → 1.0.0.90, WN3000RPv3 → 1.0.2.100, LBR1020 → 2.6.5.20, LBR20 → 2.6.5.32, R6700AX → 1.0.10.110, R7800 → 1.0.2.86, R8900 → 1.0.5.38, R9000 → 1.0.5.38, RAX10 → 1.0.10.110, RAX120v1/v2 → 1.2.3.28, RAX70 → 1.0.10.110, RAX78 → 1.0.10.110, XR450/XR500 → 2.3.2.130, XR700 →
- 7. Reboot the device to ensure the firmware is fully applied
Generated from the published advisory — verify against the referenced sources before acting.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-45602 — 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-2021-45602 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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- Version or environment caveats, and links to real fixes
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