How severe is CVE-2020-11789?

CVE-2020-11789 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-11789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11789?

CVE-2020-11789 primarily affects Netgear R6400 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11789?

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-2020-11789 published?

CVE-2020-11789 was published on 2020-04-15 and last updated on 2026-06-17.

CVE-2020-11789

CVE-2020-11789 is a critical-severity vulnerability in Netgear R6400 Firmware with a CVSS 3.x base score of 9.8. 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 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Netgear R6400 Firmware
Published: 2020-04-15
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects R6400v2 before 1.0.4.84, R6700 before 1.0.2.8, R6700v3 before 1.0.4.84, R6900 before 1.0.2.8, and R7900 before 1.0.3.10.

Frequently asked questions

What is CVE-2020-11789?: Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects R6400v2 before 1.0.4.84, R6700 before 1.0.2.8, R6700v3 before 1.0.4.84, R6900 before 1.0.2.8, and R7900 before 1.0.3.10.
How severe is CVE-2020-11789?: CVE-2020-11789 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11789?: CVE-2020-11789 primarily affects Netgear R6400 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11789?: 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-2020-11789 published?: CVE-2020-11789 was published on 2020-04-15 and last updated on 2026-06-17.

References

https://kb.netgear.com/000061741/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0051

Affected products (4)

cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*

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