How severe is CVE-2021-45624?

CVE-2021-45624 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-45624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45624?

CVE-2021-45624 primarily affects Netgear D7000v2 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45624?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-45624 published?

CVE-2021-45624 was published on 2021-12-26 and last updated on 2026-06-17.

CVE-2021-45624

CVE-2021-45624 is a critical-severity vulnerability in Netgear D7000v2 Firmware with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Netgear D7000v2 Firmware
Published: 2021-12-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-45624?: 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.
How severe is CVE-2021-45624?: CVE-2021-45624 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-45624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45624?: CVE-2021-45624 primarily affects Netgear D7000v2 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45624?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-45624 published?: CVE-2021-45624 was published on 2021-12-26 and last updated on 2026-06-17.

References

https://kb.netgear.com/000064485/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-PSV-2020-0298

Affected products (11)

cpe:2.3:o:netgear:d7000v2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:d8500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:xr300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8300_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Netgear D7000v2 Firmware

CVE-2021-45638 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects…
CVE-2021-45614 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before…
CVE-2021-45613 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before…
CVE-2021-45610 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D6220 before…
CVE-2021-45527 — Critical (CVSS 9.6): Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.68,…
CVE-2020-35800 — Critical (CVSS 9.4): Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects AC2100 before…

All CVEs affecting Netgear D7000v2 Firmware →

Other CWE-77 (Command Injection) vulnerabilities

CVE-2026-23652 — Critical (CVSS 10.0): Improper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allows an…
CVE-2025-59818 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file…
CVE-2025-64093 — Critical (CVSS 10.0): Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the…
CVE-2025-64090 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute commands via the hostname of the device.
CVE-2025-61492 — Critical (CVSS 10.0): A command injection vulnerability in the execute_command function of terminal-controller-mcp 0.1.7 allows attackers to…
CVE-2025-10035 — Critical (CVSS 10.0): A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged…

Browse all CWE-77 (Command Injection) vulnerabilities →