How severe is CVE-2017-18720?

CVE-2017-18720 has a CVSS 3.x base score of 8.8, rated high 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-2017-18720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18720?

CVE-2017-18720 primarily affects Netgear D6200 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-2017-18720?

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

When was CVE-2017-18720 published?

CVE-2017-18720 was published on 2020-04-24 and last updated on 2026-06-17.

CVE-2017-18720

CVE-2017-18720 is a high-severity vulnerability in Netgear D6200 Firmware with a CVSS 3.x base score of 8.8. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Netgear D6200 Firmware
Published: 2020-04-24
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by authentication bypass. This affects D6200 before 1.1.00.24, R6700v2 before 1.1.0.42, R6800 before 1.1.0.42, and R6900v2 before 1.1.0.42.

Frequently asked questions

What is CVE-2017-18720?: Certain NETGEAR devices are affected by authentication bypass. This affects D6200 before 1.1.00.24, R6700v2 before 1.1.0.42, R6800 before 1.1.0.42, and R6900v2 before 1.1.0.42.
How severe is CVE-2017-18720?: CVE-2017-18720 has a CVSS 3.x base score of 8.8, rated high 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-2017-18720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18720?: CVE-2017-18720 primarily affects Netgear D6200 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-2017-18720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-18720 published?: CVE-2017-18720 was published on 2020-04-24 and last updated on 2026-06-17.

References

https://kb.netgear.com/000052277/Security-Advisory-for-Authentication-Bypass-on-Routers-PSV-2017-2148

Affected products (4)

cpe:2.3:o:netgear:d6200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*

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