How severe is CVE-2017-18776?

CVE-2017-18776 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18776 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18776?

CVE-2017-18776 primarily affects Netgear D6100 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-18776?

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-2017-18776 published?

CVE-2017-18776 was published on 2020-04-22 and last updated on 2026-06-17.

CVE-2017-18776

CVE-2017-18776 is a high-severity vulnerability in Netgear D6100 Firmware with a CVSS 3.x base score of 8.4. 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 8.4)
CVSS v2: 4.6
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Netgear D6100 Firmware
Published: 2020-04-22
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by authentication bypass. This affects D6100 before V1.0.0.55, D7000 before V1.0.1.50, D7800 before V1.0.1.24, JNR1010v2 before 1.1.0.40, JWNR2010v5 before 1.1.0.40, R6100 before 1.0.1.12, R6220 before 1.1.0.50, R7500 before 1.0.0.108, R7500v2 before 1.0.3.10, WNDR4300v1 before 1.0.2.88, WNDR4300v2 before 1.0.0.48, WNDR4500v3 before 1.0.0.48, WNR1000v4 before 1.1.0.40, WNR2000v5 before 1.0.0.42, WNR2020 before 1.1.0.40, and WNR2050 before 1.1.0.40.

Frequently asked questions

What is CVE-2017-18776?: Certain NETGEAR devices are affected by authentication bypass. This affects D6100 before V1.0.0.55, D7000 before V1.0.1.50, D7800 before V1.0.1.24, JNR1010v2 before 1.1.0.40, JWNR2010v5 before 1.1.0.40, R6100 before 1.0.1.12, R6220 before 1.1.0.50, R7500 before 1.0.0.108, R7500v2 before 1.0.3.10, WNDR4300v1 before 1.0.2.88, WNDR4300v2 before 1.0.0.48, WNDR4500v3 before 1.0.0.48, WNR1000v4 before 1.1.0.40, WNR2000v5 before 1.0.0.42, WNR2020 before 1.1.0.40, and WNR2050 before 1.1.0.40.
How severe is CVE-2017-18776?: CVE-2017-18776 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18776 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18776?: CVE-2017-18776 primarily affects Netgear D6100 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-18776?: 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-2017-18776 published?: CVE-2017-18776 was published on 2020-04-22 and last updated on 2026-06-17.

References

https://kb.netgear.com/000049552/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-and-Gateways-PSV-2017-0387

Affected products (14)

cpe:2.3:o:netgear:d6100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:d7000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:jnr1010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:jwnr2010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wndr4500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wnr1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wnr2000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wnr2020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wnr2050_firmware:*:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
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