CVE-2021-45624: Certain NETGEAR devices are affected by command injection by an unauthenticated attacker
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CRITICAL 9.6UPGRADEUPGRADEUPGRADE
CVE-2021-45624 is a critical-severity flaw (CVSS 9.6) affecting d7000v2 firmware, d8500 firmware, r7000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before 1.0.0.66, D8500 before 1.0.3.58, R7000 before 1.0.11.110, R7100LG before 1.0.0.72, R7900 before 1.0.4.30, R8000 before 1.0.4.62, XR300 before 1.0.3.56, R7000P before 1.3.2.132, R8500 before 1.0.2.144, R6900P before 1.3.2.132, and R8300 before 1.0.2.144.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
netgear d7000v2 firmware UPGRADE
Affected: < 1.0.0.66
Fixed in: 1.0.0.66
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netgear d8500 firmware UPGRADE
Affected: < 1.0.3.58
Fixed in: 1.0.3.58
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netgear r7000 firmware UPGRADE
Affected: < 1.0.11.110
Fixed in: 1.0.11.110
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netgear r7100lg firmware UPGRADE
Affected: < 1.0.0.72
Fixed in: 1.0.0.72
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netgear r7900 firmware UPGRADE
Affected: < 1.0.4.30
Fixed in: 1.0.4.30
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netgear r8000 firmware UPGRADE
Affected: < 1.0.4.62
Fixed in: 1.0.4.62
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-45624?
d7000v2 firmware: upgrade to 1.0.0.66; d8500 firmware: upgrade to 1.0.3.58; r7000 firmware: upgrade to 1.0.11.110. Exact commands for each OS are on this page.
Is CVE-2021-45624 being exploited?
CVE-2021-45624 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-45624 affect?
CVE-2021-45624 affects d7000v2 firmware, d8500 firmware, r7000 firmware. Severity is critical (CVSS 9.6). Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before 1.0.0.66, D8500 before 1.0.3.58, R7000 before 1.0.11.110, R7100LG before 1.0.0.72, R7900 before 1.0.4.30, R8000 before 1.0
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